This grindstone is made of fine quality material, corrosion-resistant, heat-resistant, flat and smooth, long-lasting and convenient to use. Features: Made of fine quality white corundum material, long-lasting to use. Double side, different tenderness whetslate. Perfect choice for kitchen cutter, precision-tool and so on. Necessary for both professional cooks and home users to sharpen a cutter. It can quickly sharpen dull or damaged cutter with a few pulls. Specifications: Item type: Grindstone Material: White corundum Grit: 1000/3000, 1000/6000, 3000/8000(optional) Package weight: Grindstone+base: 700g/1.54pounds Package size: Grindstone+base: 190*70*35mm/7.48*2.75*1.37inches Package List: 1 * Grindstone 1 * Base