(12) 20 oz. Cans. Foaming penetrating & cutting oil, with extender tube. RUST RELEASE provides fast, effective lubrication in a variety of metalworking applications and its anti-friction properties prolong tool life. This foaming, penetrating lubricant is formulated to loosen rusted parts and lubricate cutting or machining carbon alloys, stainless steel, chrome steel, copper, aluminum, magnesium, and bronze. It displaces moisture, frees sticking parts, stops squeaks, stops rust and corrosion while providing long lasting protection. Use on farm equipment, sports equipment, industrial equipment, marine and auto equipment. Can be used as a cutting oil to cool and lubricate parts during metal working operations.