XS Scuba's Adapters allow you to convert any standard regulator hose to an Sea-Quest Style" QD Hose. EZ" QD Adapter is a must item for your save-a-dive kit and can quickly save an expensive dive vacation problem. No matter where you travel to dive a standard regulator hose is far easier to source than a special brand of inflator hose. Adapter is made from chromed brass for durability and corrosion resistance and is intended for low pressure use only Below 200 psi (13.8 bars). Adapter is factory cleaned and comes with Viton O-rings, so its nitrox ready. The EZ" QD Adapter is Compatible with: Sea-Quest Air Source, US Divers Air Mic, Mares Air Control.