Coarse is blue, 45 micron/ 325 mesh
Diamond Mini-Sharp® Sharpener - a Diamond Whetstone™ that travels with you.These small diamond sharpening stones feature an innovative, durable, snap open/snap close case that not only protects your stone but can also be easily attached to a zipper, carried loose, or even used as a key chain. Super hard monocrystalline diamonds are the most efficient sharpening abrasive and require only water for lubrication. Perfect for edge tools, router bits, saw blades, hooks, skis, garden tools, or anything else you can think of that needs sharpening. Handy Size: 5 1/2" opened. Closed dimensions 3-3/8" long x 1-1/8" wide x 1/4" thick. Stone Size: 2 11/16" x 15/16" x 3/16".Available in Extra-Coarse, Coarse, Fine and Extra-Fine diamond. Angler Models available in Coarse and Fine includes a special fishhook groove - easy to carry, easy to maintain hooks and fillet knives! 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). Models with added groove for fish hooks available.
FAST: Hardest material, most efficient sharpening abrasive; available in unique interrupted surface and continuous surface. EASY: Light pressure produces a sharp edge with just a few strokes
CLEAN: Use water for lubrication- no oil, smell or mess
VERSATILE: Hones ALL hard materials: carbide, steel, etc
DURABLE: Starts flat, stays flat - provides years of consistent, reliable use
Made in USA