- Heavy-duty 135 Degree split point high-speed steel drills used for drilling holes in hard to reach places.
- The black oxide treatment prevents chip welding and increases abrasion resistance.
![5/16" Type 168 12" Black Oxide Fractional Aircraft Extension, Norseman Drill #68920 5/16" Type 168 12" Black Oxide Fractional Aircraft Extension, Norseman Drill #68920](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/41061/48926/Type_168_Aircraft_Extension__85911__50970.1415296716.jpg?c=2)
Norseman Drill & Tool
5/16" Type 168 12" Black Oxide Fractional Aircraft Extension, Norseman Drill #68920
$10.20
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