JetÂŽ Tools Jobber Length Drill Bits M2 135° Split Point Black & Gold Finish Premium (for Drills and Drill Presses) feature bronze oxide gold lands to reduce friction for cooler cutting and longer bit life. Nitro carburized black flutes for improved surface hardness ensure bit stays sharp longer. 135° split point eliminate â??walkingâ?, while TORQUE DRIVEÂŽ three ground flats eliminate chuck slippage (available from s" and larger) - smaller sizes have round shanks.