Mothers 87938-4-4PK Professional Wheel Cleaner - 1 Gallon, (Pack of 4) Mothers Professional Wheel Cleaner is a biodegradable cleaning concentrate for factory/OEM wheels and hubcaps, including painted, clearcoated, color coated and chrome Professional Wheel Cleaner does not contain hydrofluoric, sulfuric or phosphoric acids, making it safer than conventional acid cleaners Recommended Dilution: General Purpose - 1:10