This is the Ultimaker 2 hot end isolator. It is the connection between the PTFE coupler and the nozzle + heater block. It is also included in the Ultimaker 2...
The Bowden tube, 67cm long. Made from PFA. Outside diameter 0.25 inches, inside 0.125 inches is used to transport the filament to the extruder head. Includes a Clamp Clip and...