This whetstone has two sides with different grits to achieve perfect sharpening results. The fine white side is in grit 400, the brown medium-fine side is in grit 240. It is manufactured by ceramic means and as a result always has a uniform structure with a completely flawless finish, making it even superior to the natural Arkansas stone. However, it does not achieve the fineness and hardness of the natural Arkansas whetstone. It is the cheaper solution for a good fine whetstone.
Can be used with oil, water or dry.