IRWIN Left-Hand Mechanics Length Cobalt High Speed Steel Drill Bit Set, 5-Bits

Constructed of M-42 8 percent cobalt high speed steel for super abrasive resistance in tough metals 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 Heavy duty spiral flute design produces faster chip ejection