ZHY Solid Carbide Ball Nose Milling Cutters, 2/4 Flutes, 60 HRC. ALTiN coated. Used in the high hardness metal machining. ... We supply Solid Carbide Ball Nose Milling Cutters, 60 HRC, 2/4 Flutes, mainly for high hardness metal machining ... ZHY 600 2/4 Flutes Carbide Ball Nose Milling Cutters 60 HRC