1 One action inserts the tube to release and connect easily. 2 Full flow:The lock claw and the seal is at the outer end of the tube. 3 The PC type has interior hexagonal shapes for efficient piping in limited spaces; The main body of the PL and PB type is a rotating structure for efficient piping. 4 Elliptical sleeve configuration is ideal for pneumatic installation in a confined space. 5 The thread has O-ring,or teflon coated.No additional sealing needed when assembling |