1. Tungsten steel blades have high hardness, wear resistance, heat resistance and corrosion resistance. 2. The bottom suction cup is suitable for smooth surfaces such as glass, granite, and ceramic tiles. 3. Light in weight, exquisite and compact, ABS is sturdy and durable, and the color is bright. 4. It is easy to use, just put the knife in the slot and pull it in one direction several times to sharpen it quickly and effectively. 5. Excellent sharpening blades can make most types of knives and tools more incisive.