4mm PNEUMATIC CONNECTOR

Pneumatic Push Pipe Fittings Makerbot 3D Printer Kit Quick Connector Jointer For Feeding PLA/ABS Remote Quick Joint
Material : Metal, Plastic;Color : Brass Tone, Blue
Hexagon nut, elliptical release ring, full port fitting, easy connection.
The elliptical release ring help to connect tube easily by manual, no special tools required.
Even after installation, the direction of the tube can be changed freely