PTFE Teflon Bowden Tube for 1.75 Filament (2.0mm ID/4.0mm OD) &ndash; White Connector Tubing for 3D Printer - 2.0 Meters IMPROVE PRINTS: Regular Bowden tube cleaning can cause wear, and extruder grinding reduces print quality. Replace your filament tubing to enhance print quality. LOW FRICTION: Made from high quality, durable PTFE, the Teflon Bowden tube allows filament to slide better for smoother results. HIGH SPEC: Withstanding temperatures up to 260C, this Bowden connector tubing has a density of 2.15-2.20g/cm3, with a 2mm ID and 4mm OD. FLEXIBLE TUBING: PTFE Bowden tubes offer impressive flexibility  ideal for smoothly tracking the moving 3D printer head. Packaged without ties to prevent crimping. AMX3D ACCESSORIES: The best 3D Prints start with the best tools! AMX3d provides 3D printing partsof the highest quality. If there are any problems with your Bowden Tube just let us know!