Scuba Tanks with DIN Connector and the valve is 4500 PSI ( 300 bar), specifically to refill PCP Air Equipments. This tank is 300 bar working pressure, test pressure of 450 bars, 6 ltrs, steel with DIN valve. Condition Note: These are sold on Airgunking by a reputed Seller who has years of experience of supplying to professional and competition shooters. Does not include adapters for specific airguns. Not to be used by Scuba Divers.