Gallon, rust dissolver, specially formulated water based product designed to dissolve & remove rust & oxidation on a variety of surfaces, suitable for use on iron, steel, aluminum, chrome, galvanized metal, porcelain, tile, fiberglass, glass, auto cooling systems & firearms, apply by brush or as a bath, quickly penetrates every void of metal surface to dissolve rust fast, powerful, proprietary formulation takes the hard work out of rust removal & transforms surfaces to like new condition.