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Carbide Flat End Mill for Deeper Cutting , 1mm 2mm 3mm End Mill Description High speed, High hard, High precision Best tungsten carbide rods from Germany HRC 55 - 65 Customized We use 100% original raw material, the micro grain tungsten carbide powder and cobalt powder(from German)to make the carbide rod, hardness can be 92.5-94.0(HRA), and T.R.S. is 4200-4800(N/mm2), this carbide rod can ensure the end mills with very strong abrasive resistance and impact strength. Original