This knife sharpener is designed to resharpen kitchen knives efficiently and with particular ease. Thanks to the compact format, the sharpener is easy to use. Loosely pull through is enough! Easily sharpens fruit knives, kitchen knives, cleavers, scissors, paring knives, chef's knives, all-purpose knives, santoku knives or utility knives and turns them back into all-purpose knives. The knife sharpener not for sharpening serrated knives, or blades whose edges are coated with tungsten carbide or titanium nitride.