Reducing hex nipple for connecting two threaded pipes with different diameters * Male National Pipe Taper (NPT) threads for connecting to female threaded pipes * 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