All metal parts on your boat, like deck fittings, are subject to corrosion and oxidation. Seapower Metal Polish is used on magnesium, copper, bronze, brass, chromium and stainless steel for the removal of oxidation and gives a gloss finish. It makes yellowed Plexiglas and Lexan clear again and restores small scratches. This paste is easy to apply and remove oxidation and salt corrosion.