Parker Stainless Steel 316 Pipe Fitting, Reducing Bushing, 3/8" NPT Male X 1/8" NPT Female Reducing bushing for connecting different sizes of pipe Female National Pipe Taper (NPT) threads on one end and male NPT threads on the other for connecting different types of pipe Made from stainless steel 316 for strength Higher corrosion resistance than stainless steel 304 NPT thread for compatibility with a range of threads