Trenton Pipe SS316-66003X02 Pipe Fitting, Class 150, Cast Stainless Steel Grade 316, Hex Bushing, 3/8" x 1/4" NPT Female x Male Threads A Hex Bushing connects two pipes of different sizes to each other Quality Precision Investment Castings made of 316 Stainless Steel to ASTM A351 Standards USA, Standard Taper Pipe Threads, NPT-Female x NPT-Male to ANSI B.120.1 Standards