Product details:

Every Co2 cylinder is produced from high strength aluminum alloy 6061-T6. These tanks are popular because they are not as heavy as steel tanks and do not rust. The service pressure is up to 1800 PSI/124 BAR with a test pressure of 3000 PSI/207 BAR. These cylinders are stamped with required U.S. Department of Transportation Markings. The 320 Valves are CGA approved, and have a male thread for Co2 Regulators. 5.5 Diameter 18.25 Height 1800 PSI CGA-320 Valve Good for 5-7 Kegs