1/2" (Inch) End Mills. These 1/2" end milll bits have a cutting diameter and shank diameter of 1/2" (0.5000"). They come in ball end, square end, corner radius, and high performance variable flute geometries. They come as uncoated solid carbide, and as PVD coated with AlTiN, AlCrN, TiN, TiCN, and ZrN. The come in 2, 3, 4, and 6 flutes.