Superior Diamond Sharpening Stones;Legendary quality;Made in the USA;Portable pocket convenience;Extra Extra Fine diamond for the finest polished edge of al bonded diamond abrasives;Sharpens knives faster than conventional stones with DMT's monocrystalline diamond surface;No oil is needed-sharpen dry or with water;Durable construction will provide years of consistent performance and reliable service

• DMT A4EE 4-Inch Diamond Whetstone for use with Aligner Extra-Extra Fine

DMT A4EE 4-Inch Diamond Whetstone for use with Aligner Extra-Extra FineDMT