The DMT Dia-Sharp Diamond Plates are impregnated with diamonds for an aggressive cutting surface. The D8F is a great plate to start setting the bevel of your edge up for refinement and is rated 600 grit. It will remove the scratches from the earlier plates or stones and will leave a nice toothy edge. These plates have rubber feet attached to keep them from slipping while in use. Measures 8” x 3” x ¾”.