Trenton Pipe SS304-66006X03 Pipe Fitting, Class 150, Cast Stainless Steel Grade 304, Hex Bushing, 3/4" x 3/8" NPT Female x Male Threads A Hex Bushing connects two pipes of different sizes to each other Quality Precision Investment Castings made of 304 Stainless Steel to ASTM A351 Standards USA, Standard Taper Pipe Threads, NPT-Female x NPT-Male to ANSI B.120.1 Standards