Item Type: Fixed Angle Sharpener + Whetstone_x000D_ Material: Aluminum alloy + white corundum_x000D_ Size of Fixed Angle SharpenerApprox. 103mm / 4.1in_x000D_ Approx. 280mm / 11in_x000D_ Approx. 104mm / 4.1in_x000D_ Approx. 79mm / 3.1in_x000D_ Size of Whetstone MonomerL: Approx.182mm / 7.2in_x000D_ _x000D_ W: Approx. 60mm / 2.4in_x000D_ H: Approx. 29mm / 1.1in_x000D_ Model: None_x000D_ Color: Fixed Angle Sharpener: Black_x000D_ Whetstone: Blue and white_x000D_ Whetstone: 6000 mesh/1000 mesh(The mesh number refers to the size 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_ Use Process of Whetstone:_x000D_ 1. Soak the whetstone in water for 5 minutes to fully absorb water._x000D_ 2. Scientifically sharpen the knife in the order of first rough grinding and then fine grinding, place the sharpening stone 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 sharpening the knife, and the effect of sharpening is better when there is water._x000D_ 4. Rinse well after use, and place it in a cool place to air dry.