• It is steel coated and practical to use. It won't take you a minute to sharpen a knife. What you need to do is place the sharp end of your knife between the two-wheeled system and move it back and forth. Thanks to its special system, you will increase the sharpness of your knife even more, you will see the difference when you use it. You can also mount it on the wall of your kitchen from the holes in the edges and make it even easier to use.