Mint condition. Scuba Diving Tank aluminum 3000psi by Luxfer 80ci with a Sherwood Selpac K Valve.measuring 26.1 66.3 cm tall with a 7..25 18.42 cm diameter. The cylinder weighs 31.4 14.2 kg is negative 1.9 lbs. when full in salt water and is positively buoyant 3.8 lbs. 1.9 kg when empty.