High Quality Knife Sharpener: Crafted with premium materials including tungsten steel, emery, and high-hardness ceramics, our knife sharpener is designed for durability and longevity, providing exceptional performance for over 3 years. Multi-Function Design: Featuring a 4-stage sharpening system, this knife sharpener allows you to easily and professionally sharpen dull knives. The three-step sharpening process (coarse, medium, fine) ensures your kitchen knives remain brilliantly sharp. *Note: Not suitable for serrated knives.* Ergonomic Design: Designed with user comfort in mind, our knife sharpener includes a non-slip rubber base and an ergonomic handle, making it suitable for both right-handed and left-handed users. The non-slip rubber base prevents slipping during use, ensuring safety and stability. Easy to Use: Compact and practical, this knife sharpener is incredibly easy to use. Simply place the blade in the sharpening notch and gently pull the knife through a few times. In just seconds, restore your dull knives to their former glory. *Tip: Adjust the angle, apply a certain amount of pressure, and pull from the base to the tip without pushing back and forth.*