R0.5*D6*30.5*75L 2-Flute HRC55 Taper Ball Nose End Mill CNC Drill Bit Tool,CNC Drill Bit Tool R0.5*D6*30.5*75L 2-Flute HRC55 Taper Ball Nose End Mill,Model: R0,5 D6 30,5 75L, Quality tungsten steel alloy taper Taper ball end mill, Tapered Ball Nose End Mill / Cone Cutters, 1 2-Flute End Mill, Suitable processing: hardwood pieces of iron and other steel parts, Mill CNC Drill Bit Tool R0.5*D6*30.5*75L 2-Flute HRC55 Taper Ball Nose End.