The machino couplings are made to Japanese Industrial Standards (JIS B9911). Comprising of a female and male parts, the male coupling is pushed into the female coupling to lock them in place. To release, the “plate” of the male component is depressed.

Nakajima Reducing Hose Couplings Product Item：WO-NHC-02 Material : Alumiunium A356-T6 (Heat Treated) Brass Standards:JIS Size: 1.5'' 2'' 2.5'' Casting Method: Forge Die-casting