Aokin PC4-M6 Quick Fitting and PC4-M10 Straight Pneumatic Fitting Push to Connect for 3D Printer Bowden Extruder, 20 pcs

Specification: 1. PC4-M6 Pneumatic fitting Inner diameter(blue end): 4mm Thread: 6 mm Material: copper and plastic 2. PC4-M10 Pneumatic fitting Inner diameter(black end): 4mm Thread: 10 mm Material: stainless steel and plastic Use: Install: connecting by the outer thread of the quick fitting. Remove: press and hold the blue or black end of the quick fitting and pull out the tube. Advantage: The upper part can be inserted outer diameter 4mm PTFE tube and self-locking. 2 end connections of quick fittings are able to bear greater and stronger impulse but won't come off.