The AnySharp knife sharpener gets almost any blunt knife sharp again in seconds, extending it's useful life, and making cutting easier and safer. Whether you're slicing meat, dicing vegetables, or carving the Sunday Roast, a sharp blade makes cutting effortless. AnySharp Knife Sharpener restores a super sharp cutting edge to blunt knife blades that have dulled with use. The unique, patented AnySharp Knife Sharpener uses tungsten carbide technology to extend the life of almost any knife. AnySharp works on virtually any steel knife, including expensive hardened steel knives and even serrated blades (like bread knives and hunting knives), making it unlike any knife sharpener, sharpening steel or sharpening stone youve ever used. - Hands free safety - Knife Edge Safety - Less chance of accidents No skill required anyone can get great results! The optimum angle to sharpen a good quality steel knife is 20 degrees. AnySharp is pre-set at 20 degrees to give a perfect edge every time. Getting a consistent angle with a sharpening stone is a skilled job, but AnySharp allows anyone to get professional results without any training at all. Once you have fixed the AnySharp to a work surface, you can sharpen knives easily and safely using just one hand. All you need to do is just gently draw the blade through the tungsten carbide sharpening edges, 3 or 4 times to restore a super sharp cutting edge.