29pc USA Drills Lifetime
- Premium Solid Cobalt M42 Super High Speed Steel
- 1/16" to 1/2" in 1/64th Increments (Does not Skip any Sizes)
- High Heat Treated Hardness 68-70 HRC (Rockwell Hardness Scale)
- 135 Degree Split Point Prevents "Walking"
- Tri-Flat Shank Prevents "Spinning" in Chuck
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