Our dual grit fast-cutting silicon carbide abrasive, sharpening stone is ideal for sharpening knives and handheld tool blades Use the coarse side to repair badly damaged edges then use the fine side for an even sharper edge Using these stones with oil enhances the sharpening action and minimizes the clogging of the stones' surface Great for fast stock removal and quick edge sharpening with minimal loading; its retail-package facilitates use in vending machines, tool cribs, and your tool box Ideal for general sharpening of cutting tools