Dixon Valve & Coupling BN32 Brass Hose Fitting, Adapter, 1/4" NPTF Male x 3/8" Hose Inner Diameter Barbed Adapter for connecting pipes or fittings of different types Connects to a hose on one end and an NPTF female connector on the other Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability Barbed fitting for a tight seal on hoses For use with a hose clamp, crimp sleeve, or ferrule (sold separately)