1.Nice appropriate for PU hose,and PA nylon tube
2.Made from plactic and simple to rotat any means you want
3.The darkish ring across the tube is the discharge – push it in to unlock the tube
4.Having one in the beginning and beneath is helping stay the filament flowing through the bearing or flanged wheel to make a constant trail.
CNBTR Tube Air Pneumatic Push In Straight Joint Pneumatic Connector Quick Fittings for PU Pipe Set of 100