- Speed helix design penetrates 3X faster than standard bits
- Triple tempered black oxide coated bits last 50% longer than regular high speed steel
- 135° split point starts on contact with no walking or skating and no center punch is required
- Easier drilling, reduced heat and extended drill bit life
|*Note||All 135° points; all round shank|
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Additional Information: Letter Size Black Oxide Drill Bits (Bulk)