... high speed cutting 2 Flute High Speed Tungsten Carbide Drill Bit1.High speed drill bit have three types: Standard 2 flutes high ... 2 flutes short flute drill bit with cooled(3xd), 2 Flute High Speed Tungsten Carbide Drill Bit With Cooled(5xd).2.AlTiN ... , carbide inserts, collet, chuck, tool holder, tool heads, carbide rod, reamer, nut, spanner, etc. ZHY 2 Flute High Speed Tungsten Carbide Drill Bit