Even the best knife will lose its initial sharpness during the course of time. The Twinsharp knife sharpener can quickly and easily restore the edge on all of your knives. Always use a J.A. Henckels sharpener or steel for your J.A. Henckels knives. This innovative and knife sharpener with its two separate sharpening modules sharpens knives simply, safely and effectively. It is easy to use because, in contrast to the sharpening steel, the angle is pre-set. Thus it is nearly impossible to use this sharpener the wrong way.