These diamond segmented grinding blocks work extremely well on EDCO floor grinders. The blocks come with the grinding plate, backing block and plastic wedge to securely fasten and align the blocks on your machine. These blocks provide superior grinding speed and life, providing up to 30,000 square feet of surface preparation. They are designed to remove floor coatings, smooth rough surfaces, level high spots and remove surface imperfections in concrete or terrazzo floors. Concut® grinding blocks used be run wet or dry.