... (3xd), 2 Flute High Speed Tungsten Carbide Drill Bit With Cooled(5xd).2.AlTiN coating, black, high aluminum coating, applicative to CNC milling machine processing ... products: carbide end mills, carbide inserts, collet, chuck, tool holder, tool heads, carbide rod, reamer, nut, spanner, etc. ZHY 2 Flute High Speed Tungsten Carbide Drill ...