The DMT Dia-Sharp Diamond Plates are impregnated with diamonds for an aggressive cutting surface. This 2” x 6” plate for the Edge Pro is double-sided. One side is Extra Coarse or approximately 220 grit, while the other is Coarse or approximately 325 grit. Both of these grits work well on wear resistant steels and are great for resetting bevels or tip and chip repair. This plate can also double as a stone flattener for your other Edge Pro water stones.