5/16" x 6" High Speed Steel | Extended Length Aircraft Extension Twist Bit | 12-Pack
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Aircraft extension drill bits made from heat resistant cobalt steel for heavy-duty construction application drilling high temperature and high strength alloys. Treated with a bronze oxide for wear resistance and identification.
- 135° split point design for more rugged and efficient drilling.
- Made from M42 Cobalt High Speed Steel for excellent wear resistance on high-strength materials.
- For drilling in medium-alloyed steel, stainless steel, hardened stainless steel, and other heat-treated materials.
- Available in both 6" and 12" lengths.
- Type "J" Gold Oxide Finish.
