Stainless Steel 304 Cast Pipe Fitting, Cross, Class 150, 1" NPT Female Cross for connecting and branching four pieces of pipe Female National Pipe Taper (NPT) threads on all four ends for connecting male pipes Made from stainless steel 316 for strength Higher corrosion resistance than stainless steel 304 Meets standards ANSI B1.20.1 and ISO 49 for quality assurance