Black Rust-Oleum Automotive Rust Reformer Flat Spray Paint-248658 10.25 oz: Converts rust into a non-rusting paintable surface. Rust Reformer eliminates the need to sand bare metal and creates a smooth flat black coating with excellent rust and corrosion resistance. Rust Reformer is great for outdoor furniture and machinery to bring new life to aged items. Prevents future rust from forming with a long lasting primer coating.