Diamond Machining Technology, Inc.6" x 2" Diamond Sharpeners. Uniquely designed diamond sharpening stones will hone the hardestmaterial with less time and effort than conventional stones. Interrupted pattern increases cutting actionwhile clearing fines from the diamond surface. Remains flat, requires only water as a lubricant and isvirtually indestructible.DMT-W6EExtra fine grit. 1200 mesh. Woodstorage box.*************NO MORE OF THIS ITEM WILL BE PRODUCED******************* (USA)