Super Lube® Synthetic Penetrant is a super fast-acting, penetrating, synthetic oil that cuts through rust or corrosion. Syncopen® penetrates hard to reach areas to allow easy removal of rusted and corroded screws, nuts or bolts. Syncopen® penetrates, lubricates and leaves a protective film to help prevent future rusting or corrosion. Super Lube, 11 OZ, Aerosol, Syncopen, Fast Acting, Penetrating Spray That Cuts Through Rust Or Corrosion In Those Hard To Reach Places, To Allow Easy Removal Of Rusted & Corroded Screws, Nuts Or Bolts, Leaves A Protective Film Of Synthetic Oil To Help Prevent Future Rusting Or Corrosion, USDA/NSF Rated H-1 For Incidental Food Contact.