Milton S-1774 2 In One Universal Safety Exhaust Coupler, 1/2" MNPT x 1/2" Body Flow, G-Style 0.125 and 0.375 Interchange. Thread Size: 1/2" MNPT. The 2 In One Universal Safety Exhaust Coupler can also be referred to as safety exhaust air coupler, universal quick connect coupler, 1/2" MNPT air coupler, G-Style coupler, and pneumatic safety coupler.
