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 1/2 in, Maximum Operating Pressure 225 psi, Maximum Operating Temperature 200 Degrees F, Specific Fitting Shape Straight Adapter, Fitting Side B Pipe Size 3/8 in, Thread Size B 7/8-20, System of Measurement Imperial, Standards DOT FMVSS 571.106, Compatible Tube Material Rubber, Minimum Operating Temperature 40 Degrees F