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Long flexible shaft drill bit with powder-coated finish and three-flat shank

Eagle Tool Us

Eagle Tool Us EHS50036 flexible drill bit 1/2 in 36 in

SKU CH-9499-MZ7YB

Flexible 36 in drill bit with 1/2 in diameter and 34 in maximum drilling depth

  • Flexible 36 in shaft reaches confined spaces
  • 34 in maximum drilling depth covers long runs
  • 1/2 in serrated tip cuts clean holes
  • 1/4 in hex shank fits standard chucks
  • Powder-coated finish resists corrosion

Eagle Tool US Flexible Drill Bit 1/2 in 36 in

The Eagle Tool US EHS50036 is a serrated cable installer drill bit designed for electricians and low-voltage technicians pulling wire through framing. Its 36 inch overall length and flexible shaft allow access through stud cavities and tight bends where rigid bits cannot reach. The 1/2 inch diameter creates clean holes for cable bundles.

Replaces standard rigid auger bits for retrofit work

This bit upgrades from fixed-length auger bits when drilling through multiple studs or around obstacles in finished walls. The jump is worth it for remodel projects where straight-line access is blocked and a 34 inch maximum drilling depth covers the span. It is not for high-volume production drilling in open new construction where rigid bits are faster.

Check shank compatibility and workspace clearance

Verify your drill chuck accepts a 1/4 inch shank diameter with a 3/16 inch hex section and three-flat grip before ordering. Ensure the work area allows the full 36 inch length to manoeuvre without kinking the shaft. Confirm the 1/2 inch hole size matches your cable or conduit requirements.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $26.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameEAGLE TOOL US

Questions about this item

What shank diameter does the 1/2 in drill bit need to fit my chuck?

The shank diameter is 1/4 in with a 3/16 in hex size, so it fits standard drill chucks that accept a quarter-inch round or hex shank.

How do I install the flexible drill bit and what step is often missed?

Insert the 1/4 in shank fully into the chuck, tighten securely on the three flats, then feed the 36 in shaft through the cavity; the step often missed is checking that the serrated tip engages before applying full power.

When will the serrated tip need replacement on this 36 in flexible drill bit?

Replace the bit once the serrated cutting edges no longer pull through wood or drywall cleanly at the 34 in maximum drilling depth, as dull serrations increase wander and binding.

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