Tube End Reducer Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Stainless Steel Fitting Side A Tube Outer Diameter 1/4 in Fitting Side B Tube Outer Diameter 3/8 in Material Grade 316 Maximum Operating Pressure 6 600 psi Maximum Operating Temperature 1 200 Degrees F Overall Length 1 5/8 in Specific Fitting Shape Straight Adapter Compatible Fitting Brands CPI Thread Size A 7/16-20 Thread Size B 9/16-20 Series CPI(TM)