Has a unique fish oil vehicle that penetrates rust to bare metal forcing out corrosive moisture and air. It has outstanding film forming properties which provide a tight bond, a long lasting protection to sound rusted steel. Be sure scale or loose rust is removed before priming. Covers approximately 350 to 500 sq. ft. per gallon, dries to touch in 6 to 12 hours and to recoat after 48 hours. Can be applied with brush, roller, or airless spray. Thin sparingly for airless spray with model No. 7700 Rust-Oleum thinner, or mineral spirits. Color and quality is the same as red/brown iron oxide. Clean up with paint thinner or mineral spirits.