Extra-Coarse is black, 60 micron / 220 mesh; coarse is blue and 45 micron / 325 mesh.DMT's ceramic is unbreakable, and designed to put a final, polished edge on your tools after first sharpening with a diamond surface.Folding plastic handles protect the sharpeners when not in use, and the durable construction will provide years of consistent performance and reliable service. Coarse grit diamond is 45 micron/325 mesh, fine is 25 micron/600 mesh, extra fine is 9 micron/1200 mesh and the ceramic is 7 micron/2200mesh. Available in Coarse/Extra-Coarse, Fine/Coarse, and Extra-Extra Fine /Extra-Fine combinations. X- Extra -Coarse (Black 60 micron/ 220 mesh); C-Coarse (Blue 45 micron/ 325 mesh); F-Fine (Red 25 micron / 600 mesh); E-Extra-Fine (Green 9 micron / 1200 mesh), Extra-Extra Fine (Tan - 3 micron / 8000 mesh). Made in USA. See 'Ships Direct from Manufacturer' link for warranty and return details.
Multi-use on edges in need of repair and sharpening: from blades to cutlery, from routers to garden tools. These double-sided folding sharpeners are convenient, light weight and portable. Only 5" long when closed, they're small enough to be carried in your pocket, yet when opened for use they provide a large 4" x 7/8" sharpening surface.Diamond and ceramic whetstones can be used dry or with water - no oil is needed, and they sharpen in a fraction of the time required by conventional oil stones. Folding plastic handles protect sharpener when not in use.