K&R Performance Air Pump System allows you to replace your CO2 bottle system so you never run out of air again! Small enough to mount in battery tray or nose of most dragsters Light Weight (Just a couple lbs. heavier than filled C02 System) Low current High PSI 12v Air Pump Built on air reservoir tank Built on regulator allows constant air PSI to related components Quick connect coupler fitting for airing tires--Never carry an air tank again! Stretch Hose w/ tire chuck Includes mounting hardware, fittings, wiring, & switch