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Ball Caster Metal - 3/8"
Price: $5.65
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Availability: Stocked
Sparkfun Item #: ROB-08909 -

This ball caster kit from Pololu includes a black ABS housing, a 3/8" diameter metal ball, two spacers (1/16" and 1/8" thick), and two #2 screw sets. The total height of this ball caster is 0.4" with no spacers. You can also adjust the height by adding the spacers. The ball caster can be mounted to a chassis by the two screw sets included in the kit. The distance between the two screw holes is 0.53".

Ball Caster Omni-Directional Metal
OOD!
Price: $11.19
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Availability: Back Order
Sparkfun Item #: ROB-00320 -

A metal caster used for omni-directional robots. Omni-what? Imagine a robot with the dual-motor gear box. The robot can pivot in one spot, but it must also allow the other wheels on the drive train to move or slide during a turn. This caster allows the robot to rotate and pivot in all directions - omni-directional - without the need for complex steering mechanisms. two complete casters Features: Can be configured for 6 different overall heights including 11, 16, 25, 27, 35, and 37mm Includes...

Ball Caster Plastic - 3/8"
OOD!
Price: $6.22
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Availability: Back Order
Sparkfun Item #: ROB-08908 -

This ball caster kit from Pololu includes a black ABS housing, a 3/8" diameter plastic ball, two spacers (1/16" and 1/8" thick), and two #2 screw sets. The total height of this ball caster is 0.4" with no spacers. You can also adjust the height by adding the spacers. The ball caster can be mounted to a chassis by the two screw sets included in the kit. The distance between the two screw holes is 0.53"

Heavy Duty Wheel - 4"
Price: $12.05
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Availability: Out of Stock
Sparkfun Item #: ROB-12124 -

These heavy duty wheels have a diameter of 4” and a width of 1”. They have a hard inner plastic core and a smooth outer rubber tire. These wheels utilize the .77” hub pattern and are ideal for any larger robot you create. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected together. The wide range of components...

Heavy Duty Wheel - 6"
Price: $17.23
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Availability: Out of Stock
Sparkfun Item #: ROB-12437 -

These heavy duty wheels have a diameter of 6” and a width of 1”. They have a hard inner plastic core and a smooth outer rubber tire. These wheels utilize the 1.5” hub pattern and are ideal for any larger robot you create. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected together. The wide range of components...

Mecanum Wheels - 65mm, LEGO Compatible (4 Pack)
OOD!
Price: $66.26
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Availability: Back Order
Sparkfun Item #: ROB-15536 -

Mecanum wheels allow your robot to not only travel forward and backward, but also sideways! Nine rollers set on a 45° rotational axis parallel to the main rotational axis of the wheel enable a broad a range of movement. Rotating all four wheels in the same direction causes forward or backward movement, rotating the wheels on one side in an opposite direction to those on the other side causes the vehicle to rotate, and rotating the wheels on one diagonal in the opposite direction to those on...

Precision Disc Wheel - 2" (Black, 2 Pack)
Price: $7.94
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Availability: Out of Stock
Sparkfun Item #: ROB-12537 -

These black precision disk wheels have an outer diameter of 2”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 2" (Blue, 2 Pack)
Price: $7.94
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Availability: Out of Stock
Sparkfun Item #: ROB-12425 -

These blue precision disk wheels have an outer diameter of 2”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 2" (Clear Orange, 2 Pack)
Price: $7.94
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Availability: Out of Stock
Sparkfun Item #: ROB-12479 -

These clear orange precision disk wheels have an outer diameter of 2”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 2" (Clear Pink, 2 Pack)
Price: $7.94
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Availability: Out of Stock
Sparkfun Item #: ROB-12145 -

These clear pink precision disk wheels have an outer diameter of 2”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 2" (Clear Yellow, 2 Pack)
Price: $7.94
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Availability: Out of Stock
Sparkfun Item #: ROB-12342 -

These clear yellow precision disk wheels have an outer diameter of 2”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 2" (Clear, 2 Pack)
Price: $7.94
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Availability: Out of Stock
Sparkfun Item #: ROB-12195 -

These clear precision disk wheels have an outer diameter of 2”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 2" (Orange, 2 Pack)
Price: $7.94
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Availability: Out of Stock
Sparkfun Item #: ROB-12530 -

These orange precision disk wheels have an outer diameter of 2”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 2" (Red, 2 Pack)
Price: $7.94
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Availability: Out of Stock
Sparkfun Item #: ROB-12396 -

These red precision disk wheels have an outer diameter of 2”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 2" (White, 2 Pack)
Price: $7.94
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Availability: Out of Stock
Sparkfun Item #: ROB-12453 -

These white precision disk wheels have an outer diameter of 2”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 2" (Yellow, 2 Pack)
Price: $7.94
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Availability: Out of Stock
Sparkfun Item #: ROB-12289 -

These yellow precision disk wheels have an outer diameter of 2”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 3" (Black, 2 Pack)
Price: $9.93
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Availability: Out of Stock
Sparkfun Item #: ROB-12201 -

These black precision disk wheels have an outer diameter of 3”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 3" (Blue, 2 Packs)
Price: $9.93
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Availability: Out of Stock
Sparkfun Item #: ROB-12334 -

These blue precision disk wheels have an outer diameter of 3”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 3" (Clear Orange, 2 Pack)
Price: $9.93
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Availability: Out of Stock
Sparkfun Item #: ROB-12398 -

These clear orange precision disk wheels have an outer diameter of 3”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 3" (Clear Pink, 2 Pack)
Price: $9.93
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Availability: Out of Stock
Sparkfun Item #: ROB-12151 -

These clear pink precision disk wheels have an outer diameter of 3”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 3" (Clear Yellow, 2 Pack)
Price: $9.93
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Availability: Out of Stock
Sparkfun Item #: ROB-12308 -

These clear yellow precision disk wheels have an outer diameter of 3”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 3" (Clear, 2 Pack)
Price: $9.93
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Availability: Out of Stock
Sparkfun Item #: ROB-12213 -

These clear precision disk wheels have an outer diameter of 3”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 3" (Orange, 2 Pack)
Price: $9.93
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Availability: Out of Stock
Sparkfun Item #: ROB-12119 -

These orange precision disk wheels have an outer diameter of 3”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 3" (Red, 2 Pack)
Price: $9.93
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Availability: Out of Stock
Sparkfun Item #: ROB-12382 -

These red precision disk wheels have an outer diameter of 3”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 3" (White, 2 Pack)
Price: $9.93
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Availability: Out of Stock
Sparkfun Item #: ROB-12516 -

These white precision disk wheels have an outer diameter of 3”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 3" (Yellow, 2 Pack)
Price: $9.93
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Availability: Out of Stock
Sparkfun Item #: ROB-12357 -

These yellow precision disk wheels have an outer diameter of 3”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 4" (Black, 2 Pack)
Price: $12.91
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Availability: Out of Stock
Sparkfun Item #: ROB-12163 -

These black precision disk wheels have an outer diameter of 4”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 4" (Blue, 2 Pack)
Price: $11.92
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Availability: Out of Stock
Sparkfun Item #: ROB-12447 -

These blue precision disk wheels have an outer diameter of 4”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 4" (Clear Orange, 2 Pack)
Price: $11.92
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Availability: Out of Stock
Sparkfun Item #: ROB-12224 -

These clear orange precision disk wheels have an outer diameter of 4”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 4" (Clear Yellow, 2 Pack)
Price: $11.92
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Availability: Out of Stock
Sparkfun Item #: ROB-12107 -

These clear yellow precision disk wheels have an outer diameter of 4”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 4" (Clear, 2 Pack)
Price: $11.92
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Availability: Out of Stock
Sparkfun Item #: ROB-12204 -

These clear precision disk wheels have an outer diameter of 4”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 4" (Orange, 2 Pack)
Price: $11.92
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Availability: Out of Stock
Sparkfun Item #: ROB-12210 -

These orange precision disk wheels have an outer diameter of 4”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 4" (Red, 2 Pack)
Price: $11.92
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Availability: Out of Stock
Sparkfun Item #: ROB-12241 -

These red precision disk wheels have an outer diameter of 4”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 4" (White, 2 Pack)
Price: $11.92
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Availability: Out of Stock
Sparkfun Item #: ROB-12226 -

These white precision disk wheels have an outer diameter of 4”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 4" (Yellow, 2 Pack)
Price: $11.92
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Availability: Out of Stock
Sparkfun Item #: ROB-12386 -

These yellow precision disk wheels have an outer diameter of 4”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 5" (Black, 2 Pack)
Price: $12.05
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Availability: Out of Stock
Sparkfun Item #: ROB-12387 -

These black precision disk wheels have an outer diameter of 5”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 5" (Blue, 2 Pack)
Price: $12.05
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Availability: Out of Stock
Sparkfun Item #: ROB-12134 -

These blue precision disk wheels have an outer diameter of 5”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 5" (Clear Orange, 2 Pack)
Price: $12.05
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Availability: Out of Stock
Sparkfun Item #: ROB-12381 -

These clear orange precision disk wheels have an outer diameter of 5”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 5" (Clear Yellow, 2 Pack)
Price: $12.05
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Availability: Out of Stock
Sparkfun Item #: ROB-12448 -

These clear yellow precision disk wheels have an outer diameter of 5”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 5" (Clear, 2 Pack)
Price: $12.05
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Availability: Out of Stock
Sparkfun Item #: ROB-12376 -

These clear precision disk wheels have an outer diameter of 5”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 5" (Orange, 2 Pack)
Price: $12.05
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Availability: Out of Stock
Sparkfun Item #: ROB-12422 -

These orange precision disk wheels have an outer diameter of 5”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 5" (Red, 2 Pack)
Price: $12.05
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Availability: Out of Stock
Sparkfun Item #: ROB-12435 -

These red precision disk wheels have an outer diameter of 5”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 5" (White, 2 Pack)
Price: $12.05
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Availability: Out of Stock
Sparkfun Item #: ROB-12507 -

These white precision disk wheels have an outer diameter of 5”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 5" (Yellow, 2 Pack)
Price: $12.05
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Availability: Out of Stock
Sparkfun Item #: ROB-12469 -

These yellow precision disk wheels have an outer diameter of 5”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Precision Disc Wheel - 6" (Black)
Price: $10.92
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Availability: Out of Stock
Sparkfun Item #: ROB-12385 -

These black precision disk wheels have an outer diameter of 6”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Rubber Ring - 1.65"ID x 1/8"W
Price: $2.09
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Availability: Out of Stock
Sparkfun Item #: ROB-12343 -

These lipped Rubber Rings have an inner diameter of 1.65", a width of 1/8", and a sturdy rubber sidewall. These rings can be used as a replacement for Precision Disk Wheels or can wrap around the outside edge of another flat disc to make the ring a simple tire. Features: ID - 1.65" Width - 1/8"

Rubber Ring - 2.65"ID x 1/8"W
Price: $1.77
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Availability: Out of Stock
Sparkfun Item #: ROB-12403 -

These lipped Rubber Rings have an inner diameter of 2.65", a width of 1/8", and a sturdy rubber sidewall. These rings can be used as a replacement for Precision Disk Wheels or can wrap around the outside edge of another flat disc to make the ring a simple tire. Features: ID - 2.65" Width - 1/8"

Rubber Ring - 3.65"ID x 1/8"W
Price: $1.97
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Availability: Out of Stock
Sparkfun Item #: ROB-12549 -

These lipped Rubber Rings have an inner diameter of 3.65", a width of 1/8", and a sturdy rubber sidewall. These rings can be used as a replacement for Precision Disk Wheels or can wrap around the outside edge of another flat disc to make the ring a simple tire. Features: ID - 3.65" Width - 1/8"