1/4" Male brass end, 3/8" ID Hose End Fitting, 2/card. 1/4" Male NPT hose end with 3/8" Inside hose diameter. Brass hose fittings are used to assemble new hoses or replace old fittings on hoses. A hose clamp may also be used but is not as desirable. For best results and professional finished product the hose end should be secured with a crimped ferrule.