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Solid Carbide Centre Drills Micro Grain Carbide End Mill Coating With TiN TiCN TiAlN Durable Micro Grain Carbide End Mill, Solid carbide Centre Drills, for cutting soft materials,alloy steel,etc. coating with TiN TiCN TiAlN Description: All bits are made of micro-grain tungsten carbide. Produced by High precision CNC grinding machines such as Walter (Made in Germany) and Anca ( Made in Australia). According to different cutting request, we have different coating such as TiN;