The DMT DiaSharp 8x3 is available in the following grit sizes: Extra-Extra-Coarse, Extra-Coarse, Coarse, Fine, Extra-Fine, and Extra-Extra-Fine. The Extra-Extra-Coarse version (120 microns) is recommended for extreme material removal and repairing damaged tools, while the Extra-Extra-Fine version (3 microns) is used for final polishing and honing a razor-sharp edge.