DescriptionThe unique, patented AnySharp uses tungsten carbide technology to extend the life of almost any knife. AnySharp PRO Chef works on virtually any knife, including expensive hardened steel knives and even serrated blades. With its PowerGrip suction cup base, it attaches securely to any smooth surface without the need for any tools. It also has a long-lasting polymer guiding top that is softer than metal, and therefore won't damage the metal edge, making it safe for your knives too. Once sharp, better results are gained by using only light pressure, and only microscopic amounts of metal are shed.