(12) 20 oz. cans. This fast evaporating cleaner is highly refined and designed for use on high-tech electronic hardware, PCBs and PWBs. Quick, penetrating action, leaves no residue and safe on plastic. Effectively removes grease, oil, dirt, and other contaminants, displaces water and moisture. Unique wetting action cleans the finest of instruments. Includes extension tube for precision application. For use in manufacturing facilities. Applications: metal, plastics, rubber, and glass surfaces. Do not use on energized equipment or equipment in operation.