12 pcs PC4-M6 Pneumatic PTFE Tube Kit 10 Metal Fittings + 2 Plastic Quick-Connect Fittings for 4mm Outer Diameter PTFE Tube

12 pcs PC4-M6 Pneumatic PTFE tube Kit 10 metal fittings + 2 plastic quick-connect fittings, for 4mm outer diameter PTFE tube12PCS Practical Kit – Includes 10 PC4-M6 metal pneumatic fittings and 2 plastic quick-connect fittings, ideal for PTFE tube replacement, repair, and spare use.For 4mm OD PTFE Tube – Designed for PTFE tubes with 4mm outer diameter, commonly used with 1.75mm filament feeding systems on FDM 3D printers.Durable Metal Fittings – The PC4-M6 fittings feature a sturdy metal body with strong threads, offering reliable connection, wear resistance, and long service life.Easy Push-Fit Installation – Quick-connect design allows the PTFE tube to be inserted or removed easily by pressing the top collar, saving time during maintenance.Wide Compatibility – Suitable for many 3D printers, extruders, hotends, Bowden tube systems, filament feeding upgrades, and DIY pneumatic tube connections.