During the course of time, even the best knife will lose its initial sharpness. Using this sharpening devices will make this task easy, with the correct technique. Conventional honing steels are made of steel that has ridges like a file. These ridges help remove burrs, a slight metal buildup, off the edge of a knife. Using this steel on a routine basis will help maintain the sharpness of a knife Length: 10" / 260 mm.