DMT WM8FC 8-Inch DuoSharp Plus Bench Stone Fine/Coarse Superior diamond sharpening stones Legendary quality Made in the USA Easy counter or bench use with larger wider diamond surface for sharpening a variety of knives and edges PLUS a continuous diamond zone for small and pointed tools Two sided sharpener with Coarse diamond to transform a dull edge and Fine diamond for a razor sharp edge Sharpens knives faster than conventional stones with DMT's monocrystalline diamond surface No oil is needed-sharpen dry or with water Durable construction will provide years of consistent performance and reliable service