K-T Industries Standard Series 6-5122 Coupler, 3/8 in, MNPT, Brass, Zinc

Interchangable with most automotive standard series couplers and plugs produced by other manufacturers. Features zinc-plated solid brass bodies and sleeves with stainless steel springs, hardened steel locking balls and valves and Buna-n (nitrile) seals. Precision machined bar stock construction provides resistance to the effects of mechanical shock in rugged applications.