Easy 3-stage sharpening system for professional results at home, anytime. Sharpens kitchen and sport knives, even Santoku knives. Blade thickness selector adjusts guides to optimum sharpening angle. Select thick for hunting knives, medium for chef's knives and standard kitchen knives, and thin for light blades like fillet and paring knives. Blade guides hold knife at the perfect angle for no-guess sharpening. Extra-fine-grit ceramic wheel fine hones the blade to a razor-sharp edge. Three Stage Sharpening system for professional results at home.