DMT W8CX-WB 8-Inch DuoSharp Bench Stone Coarse/Extra-Coarse with Base,DMT,W8CX-WB,MODMW8CX-WB" /> Superior diamond sharpening stones Legendary quality Made in the USA Easy counter or bench use; larger, wider diamond surface for sharpening a variety of knives and edges Extra Coarse diamond to repair a damaged 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