Rust-Oleum Stops Rust Gloss Protective Enamel Spray is the No. 1 rust-preventive paint available. It provides lasting protection and beauty in a wide variety of colors and finishes. Apply to metal, wood, concrete or masonry. It features a comfort tip with a wider finger pad to reduce fatigue caused by continuous spraying. In addition, there is an any-angle spray feature that allows you to spray in any direction, even upside-down.