Rust Remover Gel is effective for removing rust from all types of metals including steel, iron and copper. Coat any rusty item, let it sit and rinse it clean. Best of all it's non-corrosive, contains no acids or petroleum solvents and is biodegradable. It's non-flammable too. Fast, easy, effective and safe. This product will not harm plastic, rubber or vinyl, plus it brightens copper and brass. Finest Sprayer included with 35 ounce size.