3 in 1: Our sharpener is a three-slot design, including coarse grinding, fine grinding and polishing. This ensures that you always have the right sharpener for your tool needs, whether blunting dull knives, daily sharpening or polishing and deburring. High quality : The coarse polishing part of the sharpener uses tungsten steel blades, the fine polishing is diamond grinding wheel, and the polishing is aerospace ceramic. Different materials can meet your different sharpening needs. The body is made of plastic and rubber. Non-slip protection: The non-slip handle and the base of the sharpener are equipped with a certain rubber material to make the handle feel comfortable and increase the friction between the base of the sharpener and the table. This design ensures a stable grinding process and safe operation. CONVENIENT AND EASY TO USE: This kitchen knife sharpener is perfect for stainless steel bone knives, slicing knives, small kitchen knives, fruit knives and household kitchen knives. For coarse grinding, pull the blade back with varying force, depending on the blade, and repeat 5 times. For fine grinding, keep the blade vertical and pull it about 5 times. Unique design: This design ensures the hygiene of the kitchen sharpener and protects your and your family's health.< /p>