Micro Grain Tungsten Carbide End mills,Excellent performance for copper, cast iron, carbon steel, mould steel, stainless steel, Carbide End MillsMade of Micro Grain Tungsten Carbide, Hardness to HRA94(HV30=1930N/mm2) TRS>3900N/mm2 Manufactured by 5 axis-CNC facility from Gearmany and Swiss ALTIN coating, High toughness; Excellent resistnce to abrasion. Excellent performance for copper, cast iron, ...