The Magic Diamond Sharpener with its diamond powder coated plates lets you sharpen any knives, scissors, garden tools, axes, sickles, lawnmower blades, etc. better than any other sharpeners. One side of the sharpener is coated with a rougher diamond powder which can be used for damaged and very poorly conditioned knives and tools. The reverse side is coated with a finer diamond powder which lets you sharpen the edge of a blade even sharper and more precisely. The Magic Diamond Sharpener is also great for sanding and polishing any materials such as glass, metal, & wood. This high quality sharpener is very durable and it will last you a long time.