Best Installer Drill Bits for Through Hidden Studs (2026)
We compared flexible auger-style installer drill bits by diameter, length, shaft flexibility, construction quality, user ratings, and overall value for through-stud wire pulling
This roundup covers installer drill bits designed for drilling through hidden studs and pulling wire behind walls, emphasizing flexible auger-style shafts and lengths suited to common installer tasks. Selections prioritize fit for running wire (diameter and length), build quality, and value across available flexible drill-bit options
Top Picks
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1
Flexible auger drill bit for wire pulling, 3/4 in x 36 in
Flexible auger-style drill bit with guide features for pulling wires through walls. Rated for wood with self-feeding tip and cutting edges; strong material with memory. Customers note it works and reports mixed quality and occasional guide ball absence
- self-feeding threaded tip
- 3/4 in head with 36 in length
- heat-treated for strength and memory
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2
Flexible drill bit for wire pulling with guide ball kit, 1/2 in. x 54 in. long
Flexible auger-style drill bit with self-feeding tip for pulling wires through walls. Noted for material strength and unique self-feeding drilling; some customers report missing guide ball and durability concerns
- self-feeding threaded tip
- long flexible auger with spring steel shank
- heat-treated for strength and memory
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3
Flexible drill bit for wire pulling with guide ball kit, 3/4 in x 54 in
Flexible auger drill bit for pulling wires through walls with a self-feeding threaded tip and guide ball. Noted for material strength; some reviews mention limited flexibility and occasional head damage
- self-feeding threaded tip
- long reach for wall work
- flexible auger with memory-heat treated shaft