Stop rust permanently with Rust Bullet Automotive Low VOC rust preventative coating. Automotive Low VOC is a high-performance rust inhibitive coating that is used to protect metal surfaces from corrosion. Protects iron, steel, and most other metals and can be applied directly over rust. Provides excellent protection for cars, trucks, farm vehicles and most other types of vehicles. Automotive Low VOC delivers industry leading performance and VOC compliance in all 50 states and districts. A unique one step process with Two United States Patents that is a simple to apply, low maintenance, super tough, rust inhibitive, protective paint. Metallic gray in color.