①. Wide Range of Application: This roller sharpener is versatile, suitable for various types of knives, including kitchen knives, chef knives, and utility knives, making it an essential tool for any home cook. ②. Easy to Use: The sharpening process is simple. Just place the blade on the rolling wheel and gently roll it back and forth to achieve a sharp edge. ③. Two Degrees Sharpening Stone: Two standard magnetic tilt angles ensure that the entire blade can be evenly sharpened, 15° for a fine edge, 20° for a robust blade. ④. Efficient Sharpening: We use industrial diamonds as the grinding disc of the knife. Our millstone has 400 mesh coarse grains on one side and 1000 mesh fine grains on the other; the coarse grain disk can easily polish your knife to the desired sharpness, and the fine grain disk can remove small flaws and surface roughness on the knife, performing fine surface treatment. ⑤. This comes with a beautifully wrapped gift box, suitable for gifting to family and friends on various holidays or occasions, and is a great kitchen tool.