Fast acting loosen stubborn rust or unfreeze frozen metal parts quickly. Cleans and provides superior penetration and rust prevention. Traditional Kroil formula with the added benefits of silicone lubrication. Industrial penetrating oil the high solvency oil penetrates into tight spaces to break down rust and lubricate metal parts. Used and trusted since 1939, Kano has been a leading producer of penetrating oils and lubricants in the industrial maintenance, repair, and operations (MRO), and professional specialty trades.