Frees corroded nuts and bolts by penetrating rust. The capillary action penetrates into tight crevices, threads and seams to break the bonds that hold stuck parts together. Helps prevent rust and corrosion from re-forming and leaves behind a lubricating layer. Blu Torch technology is a unique blend of solvents, metal working fluids, and surfactants that provide fast-acting penetration. Ideal for use on nuts, bolts, threads, locks, chains, and rusted things that are stuck and wont move. Safe to use on plastics, rubber, and metal. 50-state VOC compliant. 11 oz. aerosol.