XS Scuba ScubaPro QD Adapter.

Features: 

• Convert any standard regulator hose to a “ScubaPro Style” QD hose
• Installs to the second stage end of a regulator hose
• Chromed brass construction with Viton o-rings
• Low pressure use only - below 200 psi

Compatible with: ScubaPro Air 2, Tusa Duo Air,  Atomic SS1, Sherwood Gemini, Zeagle Octo-Z