[SHARP, EASY SHARPENING]: This superior quality sharpener allows you to give a second life to your dull knives. Equipped with 3 high quality grinding wheels, this sharpener allows you to quickly sharpen the blades of your knives according toyour needs. Suitable for all types of knives except: ceramic, butcher, slotted, serrated, axes and swords. [EASY TO USE, SIMPLE]: The 3 grinding wheels are designed for all types of blunt knives with simple gestures. The CERAMIC wheel - Fine: The diamond wheel is used to sharpen slightly blunt knives. Wheel N2 COARSE- Coarse: The tungsten steel blade is used for repairing severely damaged or very dull knives. Finishing wheel N3 - Prcis FINE: Ceramic is used to remove burrs and polish sharp edges. [ERGONOMIC, ROBUST]: Equipped with an ergonomic handle, it facilitates the grip and offers optimal maneuverability. It is suitable for both left-handers and right-handers. Thanks to its removable part, cleaning is very easy. [STABLE, NON-SLIP]: Equipped with a non-slip rubber base, it provides optimal support when sharpening. this non-slip base greatly contributes to the stability of the sharpener and thus improves sharpening operations. Agood stability greatly contributes to the quality of the sharpening. Thanks to its base, the PERSPICAX sharpener fits firmly in the hand and allows the blades to be sharpened correctly. This stability also helps to avoid the risk of injury. INSTRUCTIONS FOR USE Choice of sharpening location: 1. N1 CERAMIC Diamond Sharpening Wheel - Fine: The diamond wheel is used to sharpen slightly blunt knives. 2. Grinding Wheel Tungsten Steel #2 COARSE - Coarse: The tungsten steel blade is used for repairing severely damaged or very dull knives. Use every 6 months or as needed. 3. N3 Finishing Grinding Wheel - Precise FINE: Ceramic is used to remove burrs and polish sharp edges. This sharpener keeps the blade always sharp. WARNING: This product is NOT suitable for ceramic knives and serrated knives. Do NOT swing back and forth to avoid damaging the blade of your knife. It may also shorten the life of the sharpener. Please sharpen your knives gently. Protect yourself with the pair of cut-resistant gloves supplied with the sharpener. Steps of use: Step 1: Place the sharpener on a stable surface and firmly hold the non-slip handle with one hand and the knife with the other. Step 2: Place the back of the blade in the sharpening wheel of your choice, keeping the knife blade straight and not swinging it left or right. Step3: Press down with moderate force and pull in the same direction 3-5 times. Do NOT go back and forth. Step 4: Pull the blade from its base to the tip of the knife, DO NOT push back and forth. Step 5: Once the knife is sharp, wipe the sharpener with a damp or dry cloth.