You are buying 2 new 15 oz Cans of Pit Posse Carb Cleaner.. Pit Posse Carb Cleaner is a safe, heavy-duty cleaner designed to clean out carburetor passages, valves and bowls without damaging your rubber o-rings and gaskets. .. Penetrates quickly to remove varnish, oil, etc. ..Will not harm engine, exhaust or oxygen sensors. ..For use on all brands of carburetors. ..May harm painted surfaces.