Mobil Penetrating Oil Spray NSF is a multi-purpose aerosol spray designed to penetrate and lubricate parts quickly and effectively. This penetrating oil is formulated to deliver superior lubrication and protection against rust and corrosion. It penetrates fast, loosens rusted and corroded parts, and helps reduce friction and wear. This product is NSF (National Sanitation Foundation) registered for use in food-processing and preparation areas. It is an ideal choice for automotive, industrial, and marine applications. It is a great choice for maintenance workers, mechanics, and DIYers who need to lubricate and protect parts quickly and effectively. This penetrating oil spray is designed for use on nuts, bolts, hinges, locks, chains, and other parts that need lubrication and protection. It comes in a convenient 12-pack of 500 mL aerosol cans.