3 Stage Knife Sharpening System - Combining high quality tungsten steel, diamond and ceramic abrasives to create an incredible three stage sharpening system. The first tungsten steel abrasive groove can fixand correct damaged blades, the second diamond abrasive groove can make the cutting edge sharp, and the third ceramic abrasive groove is used for fine tuning and polishing Suitable for All Types of Knives- Reshape the cutting edge using the 3-level sharpening system to extend the life of high-quality knives. This knife sharpener works for pocket knives, survival knives,hunting knives, multifunction knives and almost all metal knives, but it does NOT work for ceramic knives, shears, scissors and serrated knives Easy to Use- With an ergonomic design, our pencil sharpener is suitable for both left and right-handed users. Just gently pull the blade several times in each grinding groove and the blade can be sharpened in seconds Safety Design- The sharpener's best design features include a comfortable grip (for safe control) and a wide, soft cushion base (which can be fixed stably on the work surface) . Witha non-slip silicone base at the bottom, it is not easy to slip when sharpening, safe and inexpensive Premium Quality- Made of sturdy ABS plastic and stainless steel, the beautiful and simple design enhances your kitchen without taking up too much space. All this makes it a professional kitchen knife sharpener recommended by professional chefs