3D Printer 1.75mm Filament Pipe PTFE Tube 2mm Inner 4mm Outer Features: This product corrosion resistant, good insulation, high temperature resistance, not easy ageing, for strength. PTFE Tube as used for feeding 1.75mm filament in many 3D Printers. Specification: Inner diameter: 2mm Outer diameter: 4mm Length: 1m \/ 2m \/ 5m \/ 10m (Four sizes you can choose) Material: PETF Temperature range: -190\u2103 to 280\u2103 Package included: 1 x 3D Printer PTFE Tube