Description: Female QD: 9/16"-18 Male (Connects to a standard regulator hose) 1-1/2"L x 3/4"O.D Male QD: 3/8"-24 Male with 1lb built in check valve Connects to any standard female 1st stage low pressure port. 1-3/4"L x 5/8"O.D
Female QD has lock built into sleeve. Once connected, rotate the sleeve counter-clockwise 90deg to engage the lock.
Male QD contains 1lb check valve allowing disconnection and attachment underwater, while keeping water from flooding the system.