ZHY Solid Carbide Flat Milling Cutters, 2/4 Flutes, 65 HRC. ALTiN coated. Used in the high hardness metal machining. We supply Solid Carbide Flat Milling Cutters, 65 ... HRC, 2/4 Flutes, mainly for high hardness metal machining like die steel. ALTiN coating makes the cutters high wear ...