EXPERIENCE A NEW WAY TO SHARPEN KNIVES!! Kota Japan has been the pioneer and originator of diamond sharpening tools. Our patented bonding process and modern technology allows us to produce the finest quality sharpening products at an affordable price. Our process has often been imitated but never duplicated. Kota Japan?s unique blend of industrial diamonds combined with our patented bonding process gives you the hardest, most durable, longest lasting surface available. Because of this you are able to easily sharpen carbide, tool steel, titanium, ceramics and most any super hard material including the newer materials being used by most knife manufacturers. Kota Japan manufactures the widest variety of diamond sharpening tools available. This allows you to pick and choose the sharpener that will best serve your needs. No other manufacturer offers the choices we do. We have items for use in the kitchen, shop or field, servicing the outdoor, DIY, machine tool, wood working/wood carving, culinary/food service and other markets. SHARPENING INSTRUCTION Place the plastic tip of the sharpening rod on a solid surface. Apply lightly downward pressure to avoid slipping during use. Place heel of your blade at the top of the sharpening rod at a 20 degree angle. Sharpen the knife from heel to tip and repeat 2 - 3 times, then turn to the other side of the knife until blade is sharp. Clean the knife with water and dry it after use. Clean the knife sharpener with non-abrasive brush. .