Contains 3M precision-shaped abrasive grain, coated on a heavy duty backing. Resin bonded for heat resistance. Coated with a dry grinding aid to help reduce heat build-up. 3M precision shaped ceramic grain continuously fractures into sharp points that cut exceptionally fast, helping increase productivity Precision shaped ceramic grain is engineered to run cooler, reducing metal discoloration/oxidation and the chance of heat related stress cracks Coated with a dry grinding aid to further enhance the product's ability to run cooler and cut faster Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.