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OEM Micro Grain Carbide End Mill, Solid Carbide Center Drills, For Cutting Cast Irons, Cast Steel Durable Micro Grain Carbide End Mill,Solid Carbide Center 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