About this item Professional Sharpening Tool: Features a 2-stage sharpening system to make knives sharper. Fixed Angle Principle: Built-in guide plate fixes the blade at the ideal angle for optimal sharpening. Advanced Electromechanical Technology: Low noise, high reliability, and long service life. Diamond Grinding Wheel: Ensures high efficiency, safety, and a fine grinding effect. Double-Guide Sharpening Design: Suitable for a wide range of knives including kitchen knives and fruit knives.