Features: This professional knife sharpener with three-step sharpening process (coarse, medium, fine) you can get every kitchen knife brilliantly sharp depending on the degree of wear. The last slot is for scissors. Slot 1,2,3 are for rough grinding, medium grinding, and fine grinding. With the 4-stage knife sharpener, you can sharpen blunt knives or scissors easily and professionally. The grinding position of the brilliant sharpener is made of tungsten carbon steel, diamond rods, high-hardness ceramics. The main body is made of light and solid ABS plastic. The handle is comfortable and wide enough to hold it stabilized and in place with ease. Easy to Use: Just run the knife through each slot a few times to reveal a razor-sharp knife. Caution: 1.The sharpener is not able to work with serrated blades and scissors. 2.Do not push and pull the knife back and forth, use one direction only. Package included: 1 X Knife Sharpener Note: please don't sharpen back and forth, just push down the knives with a certain strength, pull from its base to the tip, which can be used for long time