4 Level Sharpener: Manual sharpeners are made of high quality stainless steel, the first steps are for grinding the scissors, the second is for coarse grinding of the tungsten steel blade; the third coated fine grinding diamond; 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. Heavy-duty non-slip base for ultimate stability and security. Easy To Use: Sharpening the knife only takes a few seconds, which means the dull knife can be sharpened again quickly and efficiently. Range Use: Straight steel blade kitchen knives and scissors including hardened steel blade knives.Does not include wavy knives. Product description The smart knife sharpener - perfectly sharp knives every time. Sharpening becomes easy with the sharpener. This ingenious 4-step knife sharpener brings your dull vintage kitchen knife back to its old one in no time. Step 1. The scissor sharpening slot uses tungsten alloy steel. Suitable for steel kitchen scissors. Level 2. Diamond grinding wheel for coarse sharpening: For repairing severely damaged blades, suitable for very dull knives. Level 3. Diamond wheel for fine grinding: Suitable for slightly blunt knives. Often used for daily sharpening. 4. Super Fine Honing Ceramic: Used to remove burrs and polish a sharp edge. To do this, proceed exactly as in the method described in step 2. It is recommended to finely sharpen once a week so that your blades are always sharp. The knife sharpener is suitable for a variety of knives, such as fruit knives, kitchen knives, chopping knives, chef's knives, steel or stainless steel slicing knives, etc. Not suitable for knives ceramic and serrated blades. Do not use water or other liquids when sharpening. To avoid damaging the knife, please sharpen it only with light pressure. Please note for safety: When sharpening, pull the knife back, you only have one direction. Specification Material: tungsten steel + ABS plastic + ceramic + stainless steel Dimensions: 22 x 8.3 x 6 cm Net weight: 294 g Black + Silver Package: 1 * professional knife sharpener