Compression Fitting Adapter, Application Air, Fitting Side A Connection Type Male Flareless Bite, Fitting Side B Connection Type MNPTF, Finish/Coating Zinc Nickel-Plated, Fitting Material Steel, Fitting Side A Tube Outer Diameter 5/8 in, Maximum Operating Pressure 4, 500 psi, Maximum Operating Temperature 500 Degrees F, Overall Length 1 3/4 in, Specific Fitting Shape Straight Adapter, Fitting Side B Pipe Size 1/2 in, Compatible Fitting Brands Ferulok (R), Thread Size B 1/2-14, Series Ferulok. This item has been restricted from sale in the following state (s): []