New to the Krud Kutter® family, The Must for Rust Remover GEL is the perfect solution for horizontal and vertical surfaces! The gel formula penetrates into every void of a metal surface and dissolves rust/oxidation through chemical action. A protective barrier will resist future rusting of the metal. Once completely dry, the surface is ready for the next step, whether it is painting, welding, plating, lubricating, etc. or simply leave the surface bare.