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- Jun 7, 2013
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Yes, they are oil stones; Norton makes a set of three stones about 2 1/2 X 12" that sit in a triangular mount in bakelite trough partially filled with oil, they were seen in about every butcher shop for sharpening knives, they have 3 grits of stones, the India stone being the finest grit, I use mine in the wood shop for sharpening chisels.