2 Pack, 3/8" MNPT x 1/4" FNPT, Reducer Bushing, Hose Fitting, Used To Assemble New Hoses Or Replace Old Fittings On Hoses When Reduction In Pipe Size Is Required, Made Of Corrosion Resistant Brass, Durable & Flexible Air Hose Fitting, 3/8" Male x 1/4" Female National Pipe Thread, Reducer Bushing Are Designed To Accommodate 3/8" MNPT & 1/4" FNPT, Quickly Repair Or Add New Air Hose Lines When Needed.