Get ready to dive safely with this essential emergency tank. Featuring a 3000 PSI High Pressure valve, 13 cu ft size, and a lightweight design of 5.7 lbs with valve attached, it&';s perfect for any dive. Model #AL13. A must have for your dive Comes with High Pressure design valve 13 cu ft. Pressure: 3000 PSI Length: 15.8 with valve attached Diameter: 4.38" Weight: 5.7 lbs Buoyancy full: -1.8 lbs Buoyancy empty: -1.0 lbs Water volume: about 1.9 liters Sherwood Valve model #5000K-48 High visibility yellow makes it easy to locate Attach your regulator or octo for a complete high-pressure, emergency tank