describe: 3-stage sharpening system - emery notches for coarse grinding, tungsten steel notches for medium and fine grinding, ceramic notches for fine grinding. SAFE TO USE - Our knife sharpener fits your hand perfectly, feels comfortable and non-slip, making it comfortable to use. Efficient and Fast - With this knife sharpener, you can sharpen dull knives in no time. Wider Application - Suitable for most types of knives: kitchen knives, camping knives, pocket knives, hunting knives and other knives. Durable and Strong - High-quality components ensure long life and ease of use. This kitchen knife sharpener is not suitable for serrated knives or scissors. Do not put the knife sharpener in the dishwasher. Clean the sharpener with water or a rag and let dry. After use. Don't go back and forth too much when sanding. Sharpening may discolor some blades, this is normal. Please keep this product out of reach of children. Product dimensions: 20 x 7.5 x 5 cm Package Contents: 2 pieces Knife Sharpener