Shop › Bowden tube attachments Image 1 of 2 Image 2 of 2 Bowden tube attachments $1.00 The two Couplers for each end of the bowden on tube on a 3D printer. Ends: Extruder end Hotend end Add To Cart Added! The two Couplers for each end of the bowden on tube on a 3D printer. You Might Also Like PTFE Bowden Tubing (1 Meter) $10.00 Mk8 Extruder Nozzles $2.00 Ender 3 Hotend $20.00 Ender 3 Thermistor Sensor and 3D Printer Heater Cartridge $15.00 Gray Standard Resin 1000G $25.00