(12) 20 oz. Cans. This heavy duty penetrant cleans and protects faster than traditional products. Saves production, maintenance and repair time protecting equipment with its rust inhibitor. This moisture displacer reaches deep down to loosen nuts and bolts where corrosion and rust have collected. Non-conducting up to 45,000 volts. Displaces moisture. Retards corrosion. Loosens nuts & bolts.