EZE-LAP Diamond Products has been the pioneer and originator of diamond sharpening tools, starting in the early seventies. Their patented bonding process and modern technology allows them to produce the finest quality sharpening products at an affordable price. This process has often been imitated but never duplicated. EZE-LAP's unique blend of industrial diamonds combined with their patented bonding process gives you the hardest, most durable, longest lasting surface available.