Air Brake Fitting, Application Air, Fitting Side A Connection Type Compression, Fitting Side B Connection Type MNPT, Fitting Material Brass, Fitting Side A Tube Outer Diameter 3/8 in, Maximum Operating Pressure 225 psi, Maximum Operating Temperature 200 Degrees F, Specific Fitting Shape Straight Swivel Adapter, Fitting Side B Pipe Size 1/4 in, Thread Size B 3/4-20, System of Measurement Imperial, Standards DOT FMVSS 571.106, Compatible Tube Material Rubber