All of our grind rocks are of a premium quality and choice comes down to finding a rock that works with your grinding technique.
Black rocks - Aluminum oxide grit. Tight bonded grit. Medium to heavy stock removal.
Ruby rock - Premium aluminum oxide grit. Porous bond. Medium stock removal.
Blue rock - Premium ceramic rock. Porous bond. Medium to light stock removal. Only required light, infrequent reshaping. Best seller.
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