Industrial monocrystalline diamonds are electroplated onto a steel base of 0.33-inch thickness. Up to 5 times faster sharpening than oil stone, water stone. Sharpen and hone all hard material including high-speed steel, carbide, ceramic & cubic boron nitride. Sharpen dry.

No messy oil or water needed. Exclusive mirror-flat technology guarantees long-lasting even contact with knives or tools, while oil stone and water stone easily wear down with uneven surface.

There is a ‘break-in’ period for diamond sharpeners. When first use, the surface will appear to be especially rough. This roughness is due to the final manufacturing process and will be removed over time without impacting performance. As the diamond surface wears down, more and more diamond grits are exposed and the sharpener cuts faster.