Dixon Valve BFS33 Brass Hose Fitting, Ball Seat Swivel, 3/8" NPSM Female x 3/8" Hose ID Barbed Two piece ball seat type swivel for connecting a hose to a male threaded connection Hose barb on one end and female NPSM threads on the other Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability Barbed fitting for a tight seal on hoses