Applicable Scope: Suitable for kitchen knives, garden and agricultural tools, etc   Product Features: 1.High-efficiency sharpening result 2.Hand held design, suitable for many kinds of knives 3.finger guard makes the sharpening safely 4. Ergonomic handle design make beautiful and practical. Using Instruction: 1. place the knife on a solid flat surface with the cutting edge facing up, one hand keeps the sharpener, the other holds knife, make sure the other four fingers put in the finger guard. 2. Straddle the knifes cutting edge near the handle of the knife with the "V" notch formed in the sharpener. With the head of the sharpener at about a 90 degree angle to the knives edge press down lightly using thumb pressure and draw the sharpener past the point of the blade. 3. After use, please clean the knife with the water or wiper, clean the knife sharpener with the banister brush.   Caution: 1. This knife sharpener is not suitable for sharpening the scissors and serrated blades. 2. To avoid damaging the knife, please sharpen the knife slightly and don’t sharpen back and forth. 3. Please put the knife sharpener and knife beyond the reach of children to avoid any accidents.