Stone Tools 1/4-in x 12-in Aircraft Extension Drill Bit
Stone Tools ST-646
SKU STT-ST646
Stone Tool's 1/4-in x 12-in aircraft extension drill bit has a straight shank with 135 degree split point to reduce and prevent wobbling and walking. Made from industrial quality high speed steel. Add this drill bit to your cart at HomElectrical today!
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Stone Tools ST-646 Description
- Size: 1/4-in.
- Length: 12-in.
- Industrial quality high speed steel.
- Precision ground from solid materials for true, round holes when cutting.
- Vacuum heat-treated to achieve hardness of HRc 64-65.
- 135 degree split point prevents and reduces wobbling and walking.
- Straight shank.
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$119.64Case of 12
$9.97/Each*
In Stock
Ships between 11/23/2026 - 12/07/2026
Return180-day Return Policy
Product Specifications
| Part Number | ST-646 |
| Weight | 0.40-lb |
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.
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