Features:-With 4-in-1 design, 2 tungsten steel slots are for scissors and coarse grinding, diamond slot for fine grinding, and ceramic slot for precision sharpening.-The rubber pads on the bottom provide an anti-slip function and provide firm support to prevent tipping over.-Easy to use, just place the blade into the slot and gently pull the knife in one direction several times for quick and efficient sharpening.-With an ergonomic handle, it is easy for both right-handed and left-handed users to operate and fits comfortably in the hand.-It keeps your old knives sharp, saving the environment from spending a fortune on a new set.Note:1. The knife sharpener is not suitable for sharpening serrated knives or ceramic knives, but for sharpening fruit knives, kitche.