Check the listing for details. 0.5L Portable Oxygen Tank with 4500psi Pump for Mini Scuba Diving. Condition: New. Listed at 105.22 USD. 0.5L Oxygen Tank + 4500PSI High Pressure Pump Air tank Specification: Material:Aircraft Aluminum Alloy 6061 Capacity: 0.5L Weight: 850G Gas capacity: 3.0 CU FT/85 L ITERS Length: 13.4 "/34CM Diameter : 2.25 "LB/5. 71CM Maximum pressure: 3000PSI/20BAR/20MPA Weight: 1.8 KG (FULL PACKAGE) Pump specifications: Pump size: 62x27x5cm Material: stainless steel + aluminium alloy + rubber Weight: 2.75 kg Max pressure: 4500psi Package List: 1 x 0.5L Air Tank 1 x High-pressure Pump Warning: 1.Please read and understand the instructions and precautions carefully before using the product. 2.Do not fill the cylinder with oxygen content greater than 40% 3.Suitable for recreational submersible gas source with depth less than 10 meters. 4. Store the product in a cool, dry place. Avoid direct sunlight or.