PTFE Bowden Teflon Tube 1.75 Filament 3D Printer, for Bowden Extruder

Universal Fit 5m PTFE Tube - Low-Friction 16.4ft for 1.75mm Filament 3D Printers

2M PTFE Teflon Tube for 3D Printer - 1.75mm Filament, 4mm OD X 2mm ID Clear

PTFE Teflon Tube Pipe 4mm x 2mm TRANSPARENT for Filament 1.75mm 3D Printer

PTFE Tube for 1.75mm Filament 5M(16.5ft), 3mm X 4mm OD 3D Printer Tube Food H...

PTFE Tube 26Ft-ID 2mm x OD 4mm Fit 1.75 Filament for 3D Printer White

Universal Fit 5m PTFE Tube Low-Friction 16.4ft for 1.75mm Filament 3D Printers