SHARPAL 156N Diamond Sharpening Stone with Storage Box, Dual Grit, Coarse/Extra Fine, Diamond Knife Sharpener with Non-slip Base and Angle Guide (6" x 2.5")

"FAST, long-lasting, and durable: Industrial monocrystalline diamonds are galvanized onto a steel base with a thickness of 0.35 inches. Up to 5 times faster sharpening than oilstone, waterstone." "Sharpen ALL hard materials, including high-speed steel, carbide, ceramic, and cubic boron nitride. Dry sharpening. No dirty oil or water needed" "Dual grit: Coarse 325 grit (45 microns) for fast blade sharpening; Extra fine 1200 grit (12 microns) for deburring, polishing" "Super flat surface: SHARPAL's exclusive MirrorFlat technology ensures long-lasting, consistent contact with knives or tools, while oil and water stones easily wear out to an uneven surface" "Superior bonus package: Includes a storage box with non-slip rubber pad that can be used as a sharpening base. With sharpening angle guide, integrated with 4 universal angles - 14°, 17°, 20°, 25° and instructional manual in the packaging"