New from TRINITY , Stainless Steel adapter for paintball co2 tanks. Allows to use a standard co2 paintball tank in most sodastream machines. Works with most Sodastream Soda Machines and allows normal operation without any permanent changes. Save money on refills, usually CO2 refills for PAINTBALL tanks is only $4.00-$5.00. Fill your tank at any sporting good store or paintball store in USA. The Paintball tank size you can use will vary depending on the soda machine model. Machines that utilize ONLY the 14.5oz Sodastream tanks will accept only a 9oz or 12oz Beverage Grade Paintball Tank. Machines that use the Sodastream 33oz tanks can use any size Beverage Grade Paintball CO2 tank from 9oz up to 24oz. 12OZ Size CO2 tank Industry standard Pin Valves High quality aluminum cylinders DOT / TC Stamped 5 year hydro date. Complete size: 11 3/4" long. Width:2" 1/2.