Double Round Diamond Grinding Plugs are brazed and designed for aggressive concrete cleaning, smoothing, and coating removal. They deliver fast grinding speed, high performance and long life. Double Round Grinding Plugs are available in soft, medium, or hard bond with available grits from 6 to 300. Double Round Diamond Grinding Plugs are used with floor grinding machines for concrete and hard concrete. Remove dry or wet, rough & uneven spots on concrete or terrazzo surfaces. For aggressive or non-aggressive honing of concrete & terrazzo floors. Use with: Floor grinders, preparators, prepmaster, terrco and other brands