Eaton Weatherhead 3220X6X2 Brass CA360 Fitting, Bushing, 1/8" NPT Female x 3/8" NPT Male (Pack of 10) Hex bushing for connecting two NPT threaded pipes or fittings of different sizes Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability For use with LP and natural gas, refrigeration, and hydraulic applications