Product Description: The Professional EverSharp electric knife sharpener sharpens kitchen and sporting knives to a razor sharp edge in minutes. It offers a three-stage sharpening system that grinds and hones the knife using Sapphirite sharpening wheels - the same ultra hard material used in professional sharpening shops. Interchangeable guides provide optimum sharpening angles for three different blade types: Thick for hunting and chefs knives, medium for regular kitchen knives, and thin for light blades such as fillet and paring knives. Interchangeable blade guides rest on sharpener body for compact storage. 1 year limited warranty.