Efficient SharpeningWe use industrial diamond as the grinding disc for knives. Our grinding stone has 400 mesh coarse grain on one side and 1000 mesh fine grain on the other side. The coarse grain disc can easily sharpen your knife to the sharpness you want, and the fine grain disc can remove small flaws and surface roughness on the knife and make a fine surface treatment.Two-degree sharpening stoneTwo standard magnetic tilt angles ensure that the entire blade can be sharpened evenly, 15 for a fine edge, and 20 for a solid blade.Easy to useThe sharpening process of the whetstone is simple. Just place the blade on the roller and gently roll it back and forth to achieve a sharp edge.Wide range of applicationsThis roller sharpener is widely used and suitable for various types of knives, including kitchen knives, chef knives, and utility knives. It is a must-have tool for any home chef.Best giftThis beautifully packaged whetstone comes with its own gift box, making it a perfect gift for family and friends, and a great gift for any festival or occasion. Great kitchen tools and gadgets and kitchen essentials.