PC6-01 Pneumatic Push in Bowden Extruders for 3.0mm J-Head fitting The PC6-01 Pneumatic Push in Bowden Extruder for 3 mm J-Head fitting is a small part that connects the PTFE tubing to 1.75 mm Filament extruder assemblies on 3D Printers. It is compatible with the standard up to 3 mm ID PTFE Tubing, with a thread that universally fits M10 extruder fittings. This PC6- 01 Bowden Connector is used in 3D printers with 1.75 mm Bowden-style extruder assemblies, to provide a cool, safe, and neat path for the filament to travel. This ensures that it reaches the hotend assembly without any problems, which translates to better quality prints and greater consistency. The connector utilizes a John Guest fitting, which tightens with tension, to ensure that it maintains a firm grip on the tubing. It’s easy to see why this connector is such a popular choice for Bowden-style extruders, as their compatibility and high corrosion resistance make it a valuable investment for 3D printing.