Features: Contains precision shaped 3M abrasive grain coated in a durable backing. Resin bonded for heat resistance. Coated with a dry grinding aid to help reduce heat buildup. The 3M precision shaped ceramic grain continuously fractures into sharp points that cut exceptionally fast helping to increase productivity. Designed to run cooler by reducing metal discoloration and the possibility of heat-related stress cracks. Coated with a dry grinding aid to further enhance the products ability to run cooler and cut faster. Grit 60. Mineral Abrasive - Citron II