Stainless Steel 316 Cast Pipe Fitting, Hex Bushing, MSS SP-114, 1-1/4" X 1/2" NPT Male X Female Hex bushing for connecting pipes of two different sizes Male and female National Pipe Taper (NPT) threads for connecting different types of pipe Made from stainless steel 316 for strength Higher corrosion resistance than stainless steel 304 Conforms to standards MSS SP-114, ANSI B1.20.1, and ASTM A351, for quality assurance