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Micro Grain Carbide End Mill, Solid Carbide Twist Drill With Coolant Feed For Cutting Alloy Steel Durable Micro Grain Carbide End Mill, Solid carbide twist drill with coolant feed, 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