Anderson Metals Brass Threaded Pipe Fitting, Hex Bushing, 3/4" Male x 1/2" Female Hex bushing for connecting two pipes or with different diameters Male National Pipe Taper (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 Operating temperatures range from -53 to 121 degrees C (-65 to 250 degrees F) Meets specifications ASTM B584 and ASME/ANSI B16 for quality assurance 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.