Product description 1. Products include:1×knife sharpener 2. Material of sharpener: ABS, TPR, tungsten steel, stainless steel, ceramic 3. Suitable for all kinds of knives and scissors. 4. First, hold the knife sharpener with your left hand and the knife with your right hand. The arrow of the knife sharpener points to the user; insert the knife perpendicular to the knife grinder slot, and pull the knife 1-2 times in the direction of the arrow, and the blade will be sharp immediately. Suggestion: Under normal circumstances, it is recommended to use it once a week or daily to keep your blade sharp at all times. After the knife is sharpened, wipe it with a damp cloth and then dry it. Use a soft brush to clean the metal blade or ceramic rod of the sharpener to keep the sharpener head clean! To Precautions: 1. Solemnly declare that this sharpener is not suitable for serrated knives. To 2. Don't use too much force when sharpening the knife, let alone grinding back and forth, so as not to damage the blade. To 3. It is normal that the ceramic rods and metal blades in the sharpener may be contaminated. To 4. Do not put the sharpener in the dishwasher or water, keep it dry and clean! 5. Please use our knife sharpener carefully and reasonably in daily use