The diamond Matrix line of knife sharpening stones was designed for the sharpening fanatics that insist on the best. Attention to detail and quality are immediately visible when you hold a 250 grit sharpening stone in your hand. The Matrix diamond blade sharpener stones have a special feel of their own, and last an incredibly long time.

As the stone wears, new diamond particles are exposed so the stone continues to cut at the same rate not losing any performance.