Eliminates disc brake squeal. Superior protection. Silences caliper noise. Lubricants & prevents corrosion. For disc brakes. Johnsens Ceramic Brake Caliper Lubricant Is a non-melting Lubricant formulated from synthetic base oils and enhanced with ceramic powder to reduce noise. It is treated with anti-rust, oxidation, and anti-wear additives for protection from -50 degrees F to 3,000 degrees F. The ceramic powder reduces brake noise (NVH) by changing or damping noise vibrations. Reduces noise. Not affected by salt or water. Wide operating temperature range. Prevents rust and corrosion. technicalchemical.com. Made in the USA.