The Pure Energy 20-ounce CO2 tank is ideal for all levels of paintball play. Powered by Pure Energy technology, the tank ensures a consistent recharge rate while you're in the field for maximum shooting efficiency. The tank offers such features as a recessed Pure Energy repeater valve that connects easily and conveniently to your marker, a safety purge valve installed from the factory, and durable brass construction. With proper care and hydro-testing every five years, this lightweight, durable tank will withstand a lifetime of activity.