PC4-M6 Pneumatic Coupler for 3D Printer Bowden Extruder

PC4-M6 pneumatic couplers for 3D printer Bowden extruder have M6 thread to fit into the hotend of a Bowden 3D printer. They clip PTFE tube tight onto the print head. When worn coupler is found on a 3D printer, don't hesitate to replace it with a new one. These pneumatic couplers are suitable for PTFE tube with a 4mm diameter and 1.75mm filament inside.Specifications:Material: stainless steel Thread: M6Inner diameter: 4mmCompatible filament: 1.75mmPackage includes:PC4-M6 pneumatic coupler *10/20pcs Free shipping from our Chinese warehouse. The picture is for reference only. Please adhere to the original products in case of any mistake.