4 oz. can. Recommended for use as a stripping and smoothing agent on rough, heavily oxidized or corroded non plated metals. The red formula functions in a similar manner to liquid sand paper and should be followed by heavy metal green or white formula polishes to achieve a brilliant shine. For use on aluminum, brass, bronze, copper and magnesium . Do not use on mirror stainless, chrome, nickel or any other plated metals. 4 oz. can. No ammonia, acid or water.