Maintain all you fine cutlery edges with this kit of three Diamond and Ceramic butcher steels. Use the Fine diamond (Red color code) to sharpen and realign your knife edges; the Extra Fine diamond (Green color code) to hone your knives to a razor sharp edge and then add a final polish with the DMT unbreakable Ceramic Steel (White color code). Frequent touch ups with the Extra Fine Diamond Steel will keep your edges super sharp and greatly prolong the intervals between sharpening with a DMT Diamond Whetstone. Durable construction will provide years of consistent performance and reliable service For proper tool maintenance, woodworkers, chefs and other professionals rely on the superior quality and versatility of DMT® products. Made in USA