(12) 16 oz. Cans. Chemically neutralizes rust and converts the rust to a black protective finish. Seals, prolongs, and protects the life of ferrous metal. Eliminates the need for brushing, sandblasting, or scraping before painting rusted surfaces. May be painted over without further surface preparation. Stops Corrosion. Eliminates Rust and Prevents Future Rusting. Seals and Converts Rusted Surface into Paintable Area.