Double-Sided DesignHas 400 coarse grit and 600 fine grit, the coarse surface grit returning a dull edge and the fine surface grit returning a razor sharp edge. The compact knife sharpener With its foldable handle, it encloses the diamond sharpening stone, protecting it when not in use. Due to the non-slip handling, the folding sharpener is suitable for all types of knives. Convenient No oil is needed to sharpen any type of knife. Wet and dry sharpening is possible without any problems. Thus, years of performance and durability are given. UsePerfect sharpening results in the shortest possible time on tools such as: kitchen knives, cutlery knives, woodworking tools, gardening tools, scythes, machetes, lawnmower knives lawn, spades,drills and chisels. PortableSharpen faster than conventional stones thanks to the micronized monocrystalline diamond surface No oil required, dry or wet sharpening.