Boride Ruby Sharpening Stone High-performance bonded aluminum oxide stone for roughing work and coarse sharpening on Hapstone Pro sharpeners. Series Ruby stones Ruby series stones are made of aluminum oxide...

Norton India Medium Sharpening Stone Medium-grit aluminum oxide oil stone for intermediate sharpening and edge refinement on Hapstone sharpening systems. Abrasive Aluminum oxide Made of aluminum oxide and factory impregnated...

Norton India Bench Stone Traditional aluminum oxide oil stone for knives, woodworking tools, chisels, and general sharpening applications. Abrasive Aluminum oxide The Norton India stone uses aluminum oxide abrasive for...