Upper bowden tube (Sigma) 8,60€ In stock Upper bowden tube (Sigma) quantity Add to cart Only compatible with BCN3D Sigma. The teflon tube (bowden) connects the extruder of the BCN3D Sigma with the hotend. It measures 865mm in length. Related products Upper bowden tube 19,95€ Buy Extruder Kit (L & R) R16/R17 180,15€ Buy Cooler Fan 14,95€ Buy Y-Axis pulley (long bar) 4,95€ Buy