EZE LAP Diamond Products has been the pioneer and originator of diamond sharpeners since the early 1970's. Our patented diamond process and modern technology allows EZE-LAP to produce the finest quality diamond products for the lowest possible price. The patented process of heat treatment that bonds the highest quality industrial grade diamond particles in a stainless alloy to a precision matched metal substrate, has been imitated, but has never come close to being duplicated. The resulting surface integrity from the EZE-LAP process measures about 72 on the Rockwell C hardness scale. By utilizing our technology, EZE-LAP has 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.