Irwin® Cylinder Shank AU2O3 Cobalt HSS LH 305 Mechanics Length Drill Bit has a heavy-duty construction.
Irwin® Cylinder shank mechanics length drill bit features cobalt high speed steel construction to offer superior abrasive resistance in tough metals. Drill bit has spiral flute design with dia of 1/4" and ideal for use with screw extractors.
Type: Series 305, mechanics length, left hand
Bit diameter: 1/4 in
Shank type: Cylinder
Number of flutes: 2
Flute length: 1 3/4 in
Constructed of M-42 8 percent cobalt high speed steel for super abrasive resistance in tough metals
Spiral flute design produces faster chip ejection
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
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