The knife sharpener designed sharpening slots with 2-stage sharpening system specially . Coarse Slot for fine grinding and sharpening, and Fine Slot for polishing blades. Simply place the kitchen knife sharpener on a flat work surface, hold the comfort-grip handle with one hand and the knife handle with the other to sharpen.Then, you can recycle your old, dull stockpile and sharpen them back to life. The handle is ergonomically designed to work safely and relentlessly. The base is covered with a TPR mat to prevent slipping. The sharpener can be easily used on any flat surface in the kitchen. This knife sharpener with durable ABS plastic, diamond and stainless steel. Knife sharpener grinding head with detachable design for easy cleaning and sustainable use. You will like this wonderful product. But if you are not completely satisfied with our sharpeners, Please without hesitation, we will reply you within 24 hours. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.