Cobalt High Speed Steel Fractional Straight Shank Jobber Length Drill Bit,5/16"

Features: Constructed of M-35 5 percent cobalt high speed steel for super abrasive resistance in tough metals | Heavy duty spiral flute design produces faster chip ejection | Shorter cutting lips reduce torque for drilling in high tensile strength materials | 135-degree split point reduces feed pressure for easier penetration without work hardening