Gliptone Coarse Grade Metal Polish – recommended for use as a stripping and smoothing agent on rough heavily oxidized, or corroded non-plated metals. It functions in a similar manner to liquid sandpaper. Do not use on mirror stainless, chrome, nickel or any other plated materials. Contains no ammonia, acid or water, so it is easily applied and removed and goes twice as far as equal amounts of any other metal polishes. Seals and protects with penetrating oils and waxes, giving you a long lasting brilliant shine (Applications: aluminum, copper, brass, bronze, and magnesium).