Size:16OZ Prism polish has been formulated to clean, polish and protect all metals in one application. Our protective coating is designed to last 3 to 6 months. Prism polish contains no harsh acids, caustics or abrasives, its safe on all metals, fiberglass, gel-coat, Plexiglas and painted surfaces. Prism has been developed for use in the marine, aviation, automotive, motorcycle and maintenance industries. Use prism on bronze, brass, copper, stainless steel, aluminum, pewter, nickel, sterling silver, silver plate and factory blued guns.