The ultimate in knife sharpening systems technology. It is safe, easy and convenient to use. The Lansky Controlled-Angle Sharpening System is designed to give your blade a professional, razor sharp edge every time. Diamond Kits are very aggressive and are best for quickly setting an edge or resetting the edge to a different angle. Diamonds remove steel much faster than their alumina oxide counterparts. Includes Extra Coarse Diamond (70 grit), Coarse Diamond (120 grit), Medium Diamond (280 grit), and Fine Diamond (600 grit) Hones. Precision-engineered, multi-angle, flip-over knife clamp. Sharpening hones on color-coated, finger-grooved safety holders. One guide rod for each honing stone. Specially formulated honing oil. Custom molded storage/carrying case to hold all system components.