4-in-1 Multifunction: With the 4-in-1 Knife Sharpener, you can easily and professionally sharpen dull knives. Special for scissors--grinding scissors, Tungsten steel blade--Coarse grinding, Diamond splitting --Grinding fine, Ceramic Slot--Alternating fine grinding. It's the perfect addition to most kitchens Easy to Use: Simply place the blade in the sharpening slots and gently pull the knife several times for quick and efficient sharpening, allowing you to restore your kitchen knives in seconds Professional Knife Sharpener: This knife sharpener has 1 slot for scissors and 3 slots for kitchen knife. Suitable for steel scissors, fruit knives, chef's knives and boning knives, etc. Our knife sharpener is made from strong, eco-friendly materials to make it durable. Equipped with ergonomic ABS plastic handles, non-slippery, Ergonomic design makes sharpening much safer. Tips: Do not use with serrated or ceramic knives. Do not sharpen the knife by moving it back and forth, only do it in one direction. Do not immerse in water.