Rol-Air has created a better balanced and highly portable compressed air storage tank with the new horizontal Air-Keg! This storage tank can hold 9 gallons of air and has a 1/4" drain cock valve. The tank also features four 3/8" NPT ports so you can run multiple tools at one time. In addition to extra capacity, use this down-line in your compressed-air system to help eliminate pressure drops along longer runs of hose by regulating air pressure closer to your tool. It is also useful as extra air in case of emergency.