Hao-zhuokun Knife Sharpener 4 in 1 Sharpening Stone,4 Stage Foldable Knife Sharpener Manual Scissor Sharpener with Non-Slip Base for Sharpening Kitchen Knives,Scissors,Knife Steel-Black-

How to use it? Hold the sharpener in one hand, and put the knife vertically into the slot with the other hand, and then pull the knife several times toward you. Be careful not to pull back and forth, otherwise it will damage the sharpener. note: 1. Sharp sharpener is not suitable for serrated knife. 2. Do not put the sharpener in the dishwasher. 3. In order to avoid damage to the knife, please sharpen the knife slightly, and do not sharpen the knife back and forth. 4. Keep the sharpener dry and do not put it in water or immerse it in water. 5. Please keep the sharpener and the knife out of the reach of children to avoid any accidents. 6. Sharpening may discolor some blades, which is normal. 7. Keep out of the reach of children. Package Included: 1 x sharpener