Anderson Metals 56110 Brass Pipe Fitting, Hex Bushing, 3/8" NPT Male Pipe x 1/8" NPT Female Pipe Hex bushing for connecting two pipes with different diameters Male NPT threads on one end and female NPT threads on the other for connecting pipes with different ends Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability These fittings contain lead and are not allowed by federal law to be installed for potable water use in the U.S.A. and its territories.