Parker A-Lok male elbows provide leak-proof seasl for high pressure, vibration and vacuum in liquid / gas applications. These elbows feature double ferrule design comprising a front ferrule used for creating a pressure seal between the tube and body, and a back ferrule offering strong mechanical and anti-vibrational hold. They allow easy installation and are capable of withstanding temperatures up to 1200 degrees F. Choose from a wide range of these male elbows, available in 5/16, 1/8, 3/8, 1/4 and 3/4 inch tube sizes.