- Full length is heat-treated and tempered
- Deep, open-throat design clears chips
- 7/16" hex shank fits 1/2" and larger three-jaw chucks
- Head and twist are ground to correct clearances for easy removal
- For drilling heavy timbers, as well as uses in general construction, mining, shipyards, and docks and also for electrical work
- Drills through nails without damage to the bit or distortion of the hole
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