Diablo Installer Drill Bit DIB1070 3/8 Inch Diameter Wire Cable Feed (18 Inch Length 3-Flat Shank Black Oxide Flute Framing Lumber Hole Boring)

Diablo DIB1070 3/8-Inch x 18-Inch Wood Installer Drill Bit with Wire Pulling Hole

The Diablo DIB1070 3/8-Inch x 18-Inch Wood Installer Drill Bit provides an extended 18.0-inch overall length and an integrated flute feed-through hole to bore straight passageways and pull electrical conductors directly through concealed wall studs, joists, and floor plates. Engineered with an ultra-sharp cutting point and black oxide-coated flutes, this high-speed boring tool clears wood shavings rapidly while resisting friction heat and pitch buildup across dense dimensional lumber. Equipped with a 3-flat Secure-Grip shank that eliminates bit slipping in standard 3-jaw chucks, it equips electricians, low-voltage technicians, and alarm installers with smooth, accurate cable-routing performance through stacked framing assemblies.

Best Used For:

• Concealed Wire & Cable Fishing: Boring 3/8-inch pass-through holes and attaching low-voltage Romex, Cat6 Ethernet, or security wiring to the flute eyelet for instant return-pull installation.
• Deep Wall & Floor Stud Penetration: Drilling straight through double top plates, wall sill framing, and subfloor joists spanning deep 18-inch structural cavities.
• Stacked Framing Lumber Boring: Drilling clean holes through laminated veneer lumber (LVL), solid timber beams, and plywood headers without wandering off center.

Key Performance & Safety Features

• Integrated Flute Pulling Hole: Precision-machined hole at the flute tip allows installers to attach wire directly to the bit for immediate pull-back through walls.
• Ultra-Sharp Self-Centering Tip: Delivers aggressive initial penetration and straight tracking through clean wood and multiple stacked studs.
• Black Oxide Flute Coating: Reduces friction, prevents sawdust buildup, and accelerates chip evacuation to keep operating temperatures cool.
• 3-Flat Anti-Spin Shank: Machined flats lock securely into 3-jaw drill chucks, eliminating bit spinout and galling under high feed pressure.
• Extended 18" Working Reach: Long flexible alloy steel shaft navigates deep stud bays, ceiling cavities, and enclosed interstitial construction.

What's Included

• (1) Diablo 3/8" x 18" Wood Installer Drill Bit with Wire Pulling Hole (DIB1070)

Technical Specifications

Pro-Tip: Once the bit breaks through the far wall stud or floor plate, thread your guide wire or pull string securely through the flute hole and wrap the joint with electrical tape before pulling the bit backward; this prevents wire snagging inside the wall cavity.