Sharp - for life High-quality knives need to be resharpened at regular intervals to maintain their good cutting performance. And from now on, your knife block will take care of this for you: the Zwilling Sharp Block with KIS technology. In addition to keeping your knives safe and visually appealing, it ensures that the blades are sharp at all times. This ensures optimum quality and you can enjoy your knives for even longer. The Zwilling SharpBlock is self-sharpening because ceramic sharpening stones are integrated into its insert compartments for the knives with a smooth edge (lard and garnishing knives, meat knives and chef's knives). These are arranged in such a way that the various knives are resharpened at the ideal angle when they are removed or inserted. So you don't have to worry about when or how to resharpen your knives. To ensure that the blades are always stored in the right compartment, each compartment has been equipped with a self-explanatory.