20lb. Basic System Team yellow tank;POWERTANK system includes the aluminum tank, CO2 regulator, aluminum handle/guard, and a 25 coiled hose with fittings;Uses pressurized liquid CO2;Stores 20 times the energy of a 5 gallon air tank filled to 125 PSI;Mounting brackets and additional accessories are sold separately with Mounting Bracket Included with Regulator Included Power Tank Power Tank 20lb. Basic System (Yellow) - PT20-5400-YL PT20-5400-YL Compressed Air System