The TWINSHARP knife sharpener helps you effortlessly sharpen your knives in seconds. Simply pull the knife blade through the sharpener in order to deburr and to sharpen the blade. It is constructed of sturdy ABS plastic with a curved handle that is not only comfortable to hold, but that provides additional safety by keeping hands away from the blade while sharpening. Suitable for most knives, except for those with a serrated cutting edge. This ZWILLING knife sharpener will help you to restore the sharpness to your knives, thus ensuring a higher level of safety when cutting.