eum 7830730 8-Ounce Rust ReformerFrom the ManufacturerRust-olem rust reformer chemically converts rust into a smooth, paintable surface, so there's no need to sand bare metal. Chemically converts rust into a smooth, paintable surface | Reduces need to sand bare metal | Can be top-coated with most oil based finishes or primed | Leaves a durable black finish