Widely uses: Mainly used in the fine polishing,used to restore cutting edges on straight-edged tools, such as chisels, knives, plane blades, or other precision instruments,widely used for fine parts, measuring and cutting tools, hard alloy.
Useful Dual Grit Sharpening Stone:this is composed of a double-sided whetstones of different materials and grit sizes: Boron Carbide(800#),Ruby stone(3000#);