This is the Omniswivel Quick Disconnect Adapter Sets Locking Features: Female QD: 9/16-18 Male (Connects to a standard regulator hose) Male QD: Connects to any standard 9/16"-18 2nd stage regulator fitting. For QS-YM-S: Connects to any standard 9/16"-18 Female port Details: Female QD has lock built into sleeve. Once connected, rotate the sleeve counter-clockwise 90deg to engage the lock. Male attaches to any 9/16"-18 male fitting or standard thread 2nd stage regulator. Solid Brass Construction Made with 02 compatible material Omniswivel Quick Disconnect Adapter Sets Locking."
House of Scuba
