Use as a lubricant for all metals, windows, awnings, sliding doors, fishing tackle, guns, and all industrial metals. Use for penetration - loosens rusty bolts and nuts quickly. Use for protection - it prevents cement, plaster, salt from sticking and tarnishing new aluminum. It prevents oxidation and rust on all metals. Use for cleaning tarnished aluminum and other metals. 11 oz (ounce) aerosol.