... Fitting), Milton type; Body size: 1/4", 3/8", 1/2"; Name: USA Industrial Type Air Couplers, Milton type(Air Coupler ... Coupler, Quick Fitting); Body size: 1/4", 3/8", 1/2"; Thread: NPT; Shape: Female, male, hose barb, plug, push on ... ; Material: Brass, steel; Thread size: 1 / 4", 3 / 8", 1 / 2"; Coupler type: Milton type, Industrial type; Surface treatment: Zinc plated ...