EZE-LAP Diamond Products has been the pioneer and originator of diamond sharpening tools, starting in the early seventies. This process has often been imitated but never duplicated. EZE-LAP's unique blend of industrial diamonds combined with our patented bonding process gives you the hardest, most durable, longest lasting surface available. Because of this you are able to easily sharpen carbide, tool steel, titanium, ceramics and most any super hard material including the newer materials being used by most knife manufacturers. EZE-LAP manufactures the widest variety of diamond sharpening tools available. This allows you to pick and choose the sharpener that will best serve your needs. All of our items are proudly Made in the USA.