PC4-M6 Coupler Straight Pneumatic Push in 3D printer Hotend Connection

This is a spare push in to connect fitting for Geeetech All Metal J-head bowden extruder or hotend, but also designed for

1. PC4-M6 Pneumatic fitting
Inner diameter(blue end): 4mm 
Thread: M6/3mm 
Material: copper and plastic 

1. Polyurethane or Nylon tubing
2. Quick and Reliable connections
3. Reusable: Multiple connections/disconnections
4. Convenient elliptical sleeve configuration
5. Metallic body made of non-corrosive, non-contaminant Nickel-plated Brass
6. Outside (and Inside where applicable) hexagonal wrench tightening

Package include:

1x Pc4 M6 Coupler Straight Pneumatic Push In 3d Printer Hotend Connection