Designed to remove paints, epoxies, mastics, water-proofing coating, markings, & more Grind curb gutters, expansion joints, high spots, or prep surfaces for coating. Supreme Grade S Style diamond cup wheels contain higher grade and high concentration diamond #18/20 diamond grit which is used for aggressive grinding, surface grinding, fast stock removal and more. Fits most angle grinders. Can be used both wet/dry. Sold to thousands of contractors across the nation.