Irwin® Black Oxide Cobalt HSS 5 pcs 305 LH Mechanics Length Drill Bit Set is used in heavy-duty construction.
Irwin® Mechanics length drill bit set features cobalt high speed steel construction with black oxide finish to offer superior abrasive resistance in tough metals. Drill bit set has 5/64" - 1/4"bit dia and ideal for use with screw extractors.
Type: Series 305, mechanics length, left hand
Bit diameter: 5/64 - 1/4 in by 1/32 in increments
Material: Cobalt high speed steel
Finish: Black oxide
Point angle: 135 deg
Constructed of M-42 8 percent cobalt high speed steel for super abrasive resistance in tough metals
Spiral flute design produces faster chip ejection and shorter cutting lips reduce torque for drilling in high tensile strength materials
135-deg split point reduces feed pressure for easier penetration without work hardening
Ideal for use with screw extractors
Includes: 5/64 in, 7/64 in, 5/32 in, 19/64 in and 1/4 in
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