Fine is colored red and 25 micron / 600 mesh; coarse is colored blue and 45 micron / 325 mesh.2 sided with coarse diamond to transform a dull edge and fine diamond for a razor sharp edge.Sharpens knives and tools faster than conventional stones with DMT's monocrystalline diamond surfaceNo oil is needed-sharpen dry or with waterFine is colored red and 25 micron / 600 meshCoarse is colored blue and 45 micron / 325 mesh.
Dual purpose with compact convenience, the Double Sided Diafold Sharpener offers two 4" x 1" Diamond Whetstone¿ surfaces in one lightweight, portable sharpener. Multi-use on blades, kitchen knives, specialty and garden tools, etc. Fine diamond (25 micron / 600 mesh) for a razor sharp edge. Coarse diamond (45 micron / 325) to quickly restore a neglected edge. Convenient size: 9 1/2" open. 5" closed. Folding plastic handles protect sharpener when not in use. Sharpens in a fraction of the time required by conventional stones. No messy oils needed--sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service For proper tool maintenance, woodworkers, chefs and other professionals rely on the superior quality and versatility of DMT products. Made in USA.