EverSharp electric knife sharpener Get professional results at home with this three-stage knife sharpening system. Adjustable blade selector provides the optimum sharpening angles. Select thick for hunting knives, medium for chef's knives and standard kitchen knives, and thin for light blades like fillet and paring knives.Sharpens kitchen and sporting knives, even Santoku knives to a razor sharp edge. Presto Professional EverSharp Three-stage Electric Knife Sharpener 08810:Easy 3-stage sharpening system for professional results at home, anytimeSharpens kitchen and sport knives and even Santoku knivesBlade thickness selector adjusts guides to an optimum sharpening angleSelect thick for hunting knives, medium for chef's knives and standard kitchen knives and thin for light blades such as fillet and paring knivesSapphirite coarse-grinding wheel creates the proper sharpening angleSapphirite medium-grinding wheel gives the blade a precision edgeExtra-fine-grit ceramic wheel fine hones the blade to a razor-sharp edgeBlade guides hold the knife at the perfect angle for no-guess sharpeningSimply draw the knife through each slot a few times for a razor-sharp edgeSuction cup feet provide added stabilityDimensions of Presto Professional knife sharpener: 15.438"L x 5.938"W x 7.375"H