Flare Nut, Application Air, Flammable Liquid, Freon, Inert Gases, Non-Combustible Gases, Fitting Thread Size 3/4-18, Flare Angle Inverted, Fitting Material Brass, Hex Size 3/4 in, Maximum Operating Pressure 750 psi, Maximum Operating Temperature 250 Degrees F, Overall Length 3/4 in, Specific Fitting Shape Flared Nut, Compatible Tube Outer Diameter 1/2 in, Standards SAE J512, Compatible Tube Material Aluminum, Brass, Copper, Steel, Fitting Connection Type Flared WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -