RustOleum Hammered Metal Finish Gold Rust 12OzRust is the number one enemy of any metal surface. Not only does it hampers the look of the metallic product but also damages it from inside to such an extent that it has to be thrown away completely. The Hammered metal spray paint from Rust Oleum protects any metallic surface from inducing rust and can also change the entire look of a rusted metallic object without having to sand or prime the surface to make it smooth.