Gemplers Eco-Friendly Rust Converter and Primer All-in-One – 1 Quart Restore your old purchases and investments with total ease! GEMPLER’S rust converter is the perfect way to stop tools, vehicles, tanks and other implements—anything with a rusted steel or iron surface—from further rusting. How does the product work? Gemplers Rust Converter chemically converts rust into an inert, black protective barrier which also acts as a primer, the treated surface can be painted over using an oil-based paint in just 48hrs. Alternatively the treated surface may instead be left unpainted if not exposed to direct weather elements. How to use: Use a normal wire brush to remove loose or layered scale and rust, then apply Gemplers Rust Converter with a regular paint brush or sponge. No sandblasting, heavy scraping or grinding is required. Apply four coats for optimum coverage. Coverage: This handy one quart covers up to 125 sq. ft. on a smooth surface. Eco-Friendly: Gemplers Rust Converter is environmentally safe, non-flammable and made of an easy clean-up water-based formula. Made in the USA. NOTE: This product has a nine-month shelf life. Not meant for high heat applications. Do not allow Rust Converter to freeze.