As the first step in polishing granite, this 50 grit Polishing Pad is designed for aggressive stock removal. It effectively grinds away saw marks, scratches, and unevenness to create a flat surface for polishing. The pad contains a high concentration of coarse diamonds for rapid grinding and has a hook-and-loop backing for quick changes. For optimal performance and to control heat, this pad should be used wet with a low-speed polisher or grinder.