... drill bit -For high speed cutting 2 Flute High Speed Tungsten Carbide Drill Bit1.High speed drill bit have three types: Standard 2 flutes high speed drill bit, high ... , carbide inserts, collet, chuck, tool holder, tool heads, carbide rod, reamer, nut, spanner, etc. ZHY 2 Flute High Speed Tungsten Carbide Drill Bit