3-in-1 knife sharpener, made of stainless steel, for sharpening knives and scissors, with non-slip handle and ergonomic design, ideal for home and professional use. Rapid sharpening tool, with tungsten steel technology, turns the traditional side into double-side sharpening to greatly improve sharpening speed. The unique corner design makes the grinding cutlery more sharp and durable. After sharpening your knives, you will feel comfortable placing the cutting board across meat, fruits and vegetables smoothly. Our product is simple and easy to use; It does not require water or electricity, and is indispensable for modern family kitchen supplies. [Chopping knives]: Put the sharpener on the platform, left hand holding the sharpener handle, put the knife vertically into a V-shaped groove, with appropriate force to pull back (do not push the knife forward). As the direction of the arrow several times until the knife is sharpened, then place the knife vertically on the V-shaped "fine grinding" to pull the knife as above to achieve optimal knife sharpness. If there are gaps on the knife or the nostrils are too thick, please repair it before. Usage Please clean the oil on the knife before sharpening it to avoid affecting the effect of the sharpener. Not suitable for sharpening ceramic knives or scissors Note: Please check the position or angle of the knife in V-shaped groove and grind the knife again if the knife is not sharp enough.