Quick disconnect high flow ball and ring lock type coupler.
DeVilbiss 240147 Quick Disconnect High Flow Steel Coupler 1/4 in MNPT
DeVilbiss 240148 Or 240147 Quick Disconnect High Flow Steel Coupler 1/4 Air
DeVilbiss Quick-Disconnect Fitting 240148
Devilbiss 240148 QD High Flow Coupler
DeVilbiss Quick Disconnect High Flow Steel Coupler Heavy Duty 2-1/2" x 3/4
DeVilbiss HC-4719 240147 Quick Disconnect High Flow Steel Coupler 1/4 NEW