Real diamond, hardest material known that with a unique pattern that reduces sharpening time. Light pressure produces keen edge with few strokes for sharpening roller ski ferrule tips. Non-porous surface resists loading and wipes clean. Use only water for lubrications. Tough monocrystalline diamond resists water. Hones are hard material - tungsten carbide, HSS, steel, ceramic, glass, stone, etc. |
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