Since the early 1970s the Eze-Lap Diamond products have been the pioneer and originator of the diamond sharpeners. Eze-Lap produce the finest high quality diamond products for the lowest possible prices. Their process of the heat treatment is patented. It bonds the highest quality industrial grade diamond particles in a stainless alloy to a precision matched metal substrate that has been imitated, but has never come close to being duplicated. By utilizing the technology, Eze-Lap created a surface that works on carbide, ceramic, tool steel, hardened materials and newer stainless steels that are utilized by most major knife manufacturers today.