21pc Cobalt Drill Bits

• Constructed of M-42 8 percent cobalt high speed steel for super abrasive resistance in tough metals
• Heavy duty spiral flute design produces faster chip ejection
• Shorter cutting tips reduce torque for drilling in high tensile strength materials
• 135 degree split point reduces feed pressure for easier penetration without work hardening
• Comes in a metal case

Set includes sizes: 1/16" through 3/8" in 1/64" increments.