... -risistance,special use for high speed cutting of CNC milling machine.also can inclease the smoothness,reduce the rubbing ... ,save more production timeTungsten Carbide Ball Nose Milling CutterTungsten Carbide Ball Nose Milling Cutters1 Suitable for Copper,Cast Iron,Carbon steel ... -risistance,special use for high speed cutting of CNC milling machine.also can inclease the smoothness,reduce the rubbing ...