DMT W8F 8-Inch Diamond Whetstone Sharpener, Fine with Hardwood Box Superior diamond sharpening stones Legendary quality Made in the USA Excellent gift with Hardwood case for easy counter or bench use; larger, wider diamond surface for sharpening a variety of knives and edges 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