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CBN Honing Stones for Hardened Steel

High-performance CBN cubic boron nitride honing stones (NM series) specially formulated for hardened steel, alloy steel, tool steel, and die steel. Delivers Ra 0.025-1.6μm surface finish, excellent wear resistance, and stable cutting performance. Perfect for automotive engine cylinder block honing.

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High-performance CBN cubic boron nitride honing stones (NM series) specially formulated for hardened steel, alloy steel, tool steel, and die steel. Delivers Ra 0.025-1.6μm surface finish, excellent wear resistance, and stable cutting performance. Perfect for automotive engine cylinder block honing.

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