Control the game with consistent air pressure! DXS Carbon Fiber 68ci 4500 psi HPA Tank systems operate with the best regulators on the market for unbeatable consistency with the best regulators on the market for unbeatable consistency in air pressure delivery. Each regulator is installed and verified by the manufacturer to ensure virtually zero defect rates.DXS Carbon Fiber 68ci 4500 psi HPA Tank features:- 4500 psi vessel rating - 1020-1360 shots with a fill depending on marker - Gel coated fiber wrap - Smaller and lighter than competitive tanks - ASTM approved - DXS regulators are equipped with the High Pressure Burst Disk required by the D.O.T. - DXS regulators have an 1800 psi safety burst disk (stamped 1800psi) to protect the marker - 5 year hydro test date All CO2 and HPA tanks must be shipped empty as per DOT regulations. To learn more about the difference between CO2 and HPA tanks you can read our tutorial, Compressed Air vs. CO2 for Paintball.