Push-to-connect fitting is a male compact Swivel Elbow with a hex configuration. Working pressure 150 psi, temperature range is 32˚ F to 140˚ F. Nickel Plated Brass, Buna-N O-ring and the grip ring is Stainless Steel. For use with compressed air and inert gases. Long stem version available. SAE and G threads have an O-ring below the hex.