In order to remove coatings quickly and efficiently, use the Runyon Surface Prep Premium 12 Segment Threaded Premium Cup Wheel. 12 Turbo Segmented cup wheels were designed to help reduce the circle marks and gouging that row style cup wheels created. Having less segments and less diamond surface area makes them more aggressive than the 18 or 24 seg version. They are the most popular option for concrete prep. These are specially designed to grind quickly on concrete and masonry surfaces while keeping up with quality efficiency. Use this cup wheel to remove thin set, thin mill glues, thin mil epoxies and urethanes.