Credit Card Diamond Stone Set 3 Piece

Sharpal® Credit Card Size Diamond Sharpening Stones fit easily in your pocket or wallet and come in a convenient storage pouch. Industrial monocrystalline diamond is electroplated in nickel onto a steel base for longevity. Pack includes: coarse 325-grit (45-micron) to quickly restore a neglected edge; fine 600-grit (25-micron) for a sharp edge; and extra fine 1200-grit (9-micron) to hone and refine a sharp edge after sharpening with a coarser diamond. Stones are ideal for knives, small edged and pointed tools, including carbide, high speed steel, titanium, ceramics, and most any super hard material such as the newer materials being used by most knife manufacturers. Sharpen dry; no messy oil needed. Patent pending ring grip holding.