The Diamond Edge Electric Knife Sharpener is designed to keep all cutlery in prime condition. It incorporates both mechanical and manual sharpening elements in one beautifully designed unit that fits perfectly in any environment. It is easy to use and will sharpen a very dull knife blade in a matter of minutes using a monocrystalline diamond-coated sharpening wheel and crossed ceramic stones. The coarse diamond sharpening wheel will put a long-lasting, sharp cutting edge on even the hardest of steels. It will not damage or detemper your blade and the blade guides hold your knife at the correct angle during mechanical sharpening.