The Valley Industries Universal 1/2” MNPT x 3/8” FNPT Reducer Bushing Pump Port Fittings were designed to provide flexibility for your 12volt diaphragm pump when it comes to connecting a hose to a spot or broadcast sprayer. Made of polypropylene material for increased longevity. Features 1/2” MNPT x 3/8” FNPT connection. Approved for use with Round Up and other branded herbicides or pesticides. Compatible with Everflo and other branded 12volt diaphragm pumps with threaded ports.