ZHY Solid Carbide Ball Nose Milling Cutters, 2/4 Flutes, 65 HRC. ALTiN coated. ... metal machining. We supply Solid Carbide Ball Nose Milling Cutters, 65 HRC, 2/4 Flutes, mainly for high ... die steel, titanium steel. ALTiN coating makes the cutters high wear-resistance, also reduce the times to change ... the cutters in working and will save more production time, ...