RUST-OLEUM STOPS RUST Automobile primer provides a durable rust inhibitive base for most automotive lacquers and enamels. For maximum protection, topcoat with a RUST-OLEUM STOPS RUST enamel. If using an auto lacquer, a test application for compatibility is recommended. STOPS RUST automobile primer features a comfort tip with a wider finger pad to reduce fatigue caused by continuous spraying and the any-angle tip which allows you to spray at any angle. Automobile primer is fast-drying and sandable for bare or lightly rusted surfaces. Not for use on galvanized steel. | Rust-Oleum Stop Rust Light Gray Automobile Primer in Grey | Size 12 oz