This IRWIN 5-Piece Left-Hand Mechanics-Length Cobalt High-Speed Steel Drill Bit Set includes drill bits made of M-42 8% cobalt high-speed steel for super abrasive resistance in tough metals. The 135° split point reduces feed pressure for easier penetration without work hardening, and the heavy-duty spiral flute design produces fast chip ejection. The shorter drill bit length gives added strength and allows you to drill into fasteners without tightening them and often remove broken fasteners without an extractor.

• Drill bits made of M-42 8% cobalt high-speed steel for super abrasive resistance in tough metals
• 135° split point reduces feed pressure for easier penetration without work hardening
• Each drill bit has a heavy-duty spiral flute design that produces fast chip ejection
• Shorter cutting lips reduce torque for drilling in high-tensile-strength materials
• IRWIN drill bits are great for use with screw extractors

Drill bits made of M-42 8% cobalt high-speed steel for super abrasive resistance in tough metalsIRWIN