A 100% synthetic formula, coupled with real ceramic solids make this premium brake lubricant our longest lasting, most temperature resistant way to silence brake noise. Effective from -50 degrees Fahrenheit to 3000 degrees Fahrenheit (-46 degrees Celsius to 1649 degrees Celsius), this product maintains its lubricating integrity under the most extreme conditions. Resistant to corrosion and contaminants, it will not wash out. For metal-to-metal contact only. 8 fl. oz. size comes in a Brush-Top bottle. Directions: 1. Clean parts to be lubricated with Permatex Brake & Parts Cleaner. 2. Apply small amount to caliper hardware and backing plates to create uniform surface areas and prevent noise. 3 .Lubricant may also be used as a noise suppressor to eliminate caliper brakesqueal by applying to the BACK of the brake pad.