Left-Hand Mechanics Length Cobalt High Speed Steel Drill Bits, 5/16 in

Features: Constructed of M-42 8 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 | Ideal for use with screw extractors