This is the Ultimaker 2+ TFM Teflon coupler. Replace this part when your original TFM coupler shows signs of wear and friction in the tube. In our testing, this part may last 10 times as long as the original PTFE Coupler.
This part is compatible with the Ultimaker 2, Ultimaker 2+, Ultimaker 2 Extended, Ultimaker 2+ Extended & Ultimaker 2 Go.