What people love (and donât love)
What people love
- Works well for drilling and fishing wires through walls and under slabs.
- Good value compared to hiring professionals or buying local bits.
- Well built and sturdy, holds up under use with cordless drills.
- Functions as a wire puller effectively when wires are taped on.
- Ideal length for remodeling and adding wiring in existing structures.
What people donât love
- Some users found it is not flexible despite product claims.
- Does not have a fish eye hole on the shaft end as described.
- Reports of the bit breaking on first use, indicating possible quality issues.
- Not suitable if a flexible drill bit is needed for fishing wires.
Good value and sturdy for wire pulling, but lacks true flexibility and some may encounter quality concerns.
Summary based on customer review evidence.
Quick facts
- Brand: Greycore
- Price: USD 25.99
- Rating: 4.20 (189 reviews)
If youâre running cable through studs, plates, or other wood framing, the Greycore Tools 9/16″ x 54″ Flexible Drill Bit is built to make the job smoother. Its long, flexible shank helps you maneuver in tight wall spaces, while the auger-style cutting head and screw point tip are designed to bite into wood and keep the bit moving forward.
You can view the current price and full details on Amazon here.
For pulling wire, this installer bit includes fish eye holes on both endsâhandy when you need to pull from either direction without backing out and re-threading. It also uses a 3-flat shank (3/16″ diameter) thatâs compatible with standard 3-point drill chucks and helps reduce slipping during drilling.
- 9/16″ x 54″ installer-style flexible drill bit with auger head
- Fish eye holes on both ends for pulling wire from either direction
- 3-flat 3/16″ shank fits standard 3-point drill chucks and helps resist slippage
- High Speed Steel (HSS) one-piece design with machine-sharpened cutting head and screw point tip
- Designed to drill through wood, including hardwoods, softwoods, plywood, and OSB
This is a solid pick for DIYers and pros who want a longer installer bit for routing wire in walls and other enclosed spaces where a standard-length bit wonât reach.











