Union Tee, Application Air, Fitting Side A Connection Type Compression, Fitting Side B Connection Type Compression, Fitting Side C Connection Type Compression, Fitting Material Brass, Fitting Side A Tube Outer Diameter 3/8 in, Fitting Side B Tube Outer Diameter 3/8 in, Fitting Side C Tube Outer Diameter 1/4 in, Thread Size B 7/16-24, Thread Size A 17/32-24, System of Measurement Imperial, Maximum Operating Pressure 150 psi, Maximum Operating Temperature 200 Degrees F, Overall Length 1 5/8 in