ZPK1186 Features: * Coupler * Plated steel couplers have hardened steel balls and stainless steel springs * Coupler plugs are heat treated to reduce wear on critical mating surfaces * Easily identified by the long plug end * Identified with one narrow and one wide groove on the sleeve * Maximum working pressure 300 PSI * 1/4"" MNPT Dimensions: * 1/4"" LINC