This small Diamond plate from DMT is a perfect addition to any stone progression for many reasons. First, it is great for raising a slurry to help the cutting and polishing ability of the stone in use. Second, it can be used as the starting point to cut quickly on harder steels and to help set the bevel if starting anew. And third, is can be used as a lapping plate to make sure your stones are flat. The 45micron and 325 mesh helps to insure no gouging on finer stones. Measures 1” x 3”. This plate is too small for flattening other stones.