4 Levels Sharpener: The manual sharpeners are made of high quality stainless steel, the first stages apply to scissors grinding, the second stages apply to tungsten steel blade coarse grinding; the third diamond coated fine grinding; the fourth ceramic slot - precision polishing. Ergonomic Design: The smart knife sharpeners feature a comfortable handle for maximum grip, suitable for both right and left handed users. Sturdy non-slip base for ultimate stability and safety. Easy to Use: Sharpening the knife takes only a few seconds, which means that the dull knife can be sharpened again quickly and effectively. Use Range: Straight steel blade kitchen knives and scissors, including hardened steel blade knives. Does not include wavy knives. Packing Details: 1 x Sharpener (Knife not included)