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System of Measurement System of Measurement |
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Overall Length Overall Length |
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Maximum Drilling Depth Maximum Drilling Depth | Show |
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Maximum Drilling Depth Maximum Drilling Depth | Hide |
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Bit Style Bit Style |
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![]() | Open Spiral Flute |
For Use On For Use On |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Flute Direction Flute Direction |
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Right Hand |
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Shaft Diameter Shaft Diameter |
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Shaft Type Shaft Type |
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Finish Finish |
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Material Material |
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Individual/Set Individual/Set |
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Shank Type Shank Type |
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![]() | Round |
Drill Bit Decimal Size Equivalents
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About Drill Bits
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Flexible-Shaft Drill Bits for Wire Installation

The shaft is made of spring steel instead of hardened steel, so it flexes while drilling, allowing you to drill inside walls or between floors. A hole in the flute near the tip lets you pull wire through after holes are drilled. The end of the wire must be stripped prior to attaching it to the bit. Also known as bell hanger bits.
Use a hand guide (sold separately) to position flexible-shaft drill bits.
Use a ball guide (sold separately) to keep flexible-shaft drill bits centered between studs and drywall.