Irwin 63221 Drill Bit 21pc Set Cblt

Irwin 63221 Features:

• Constructed of M-35 5% 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