Item Type: Whetstone_x000D_ Material: Ceramic + solid wood_x000D_ Color: Blue and white_x000D_ Grit Size: Rough Surface: 1000# Fine Surface: 6000#_x000D_ Shape: Cuboid_x000D_ Scope of Application: Suitable for polishing various high-end knives in household kitchens_x000D_ Product Description: The mesh number refers to the grit of the whetstone, that is, the thickness of the particles. The smaller the mesh, the thicker the surface, and the larger the mesh, the finer the surface._x000D_ User Manual: _x000D_ 1. Soak the whetstone in water for 5 minutes to full absorb water._x000D_ 2. Scientifically sharpen the knife in the order of first rough grinding and then fine, place the whetstone steadily, and then polish it back and forth according to the angle of the blade, and rub it repeatedly._x000D_ 3. There is no need to scrape off the mud when the knife is sharpened. The effect of sharpening is better when there is water._x000D_ 4. Rinse after use, and place it in a cool place to air dry._x000D_ Size: Approx. 210mm / 8.3in_x000D_ 182mm / 7.2in_x000D_ 90mm / 3.5in_x000D_ _x000D_ 29mm / 1.1in_x000D_ 60mm / 2.4in