Diablo Black Oxide Coated 3-Flat Shank Installer Bit

Diablo Black Oxide Coated 3-Flat Shank Installer Bit

The Diablo Installer Bit is an extended-length drill bit engineered for electricians and installers running wire and cable through walls, ceilings, and floors. This family is available in Bit Diameters ranging from 1/4 in. to 1/2 in. (1/4", 3/8", 1/2"), with every size sharing an 18 in. overall length, a 3" working length, black oxide coated flutes, and a 3-Flat Shank for consistent performance across the entire lineup. An ultra-sharp tip delivers fast, straight holes in clean wood and stacked lumber, while the black oxide coating resists debris build-up for continuous chip removal during long bores, and a wire-feed hole in the flute simplifies pulling cable through the finished bore.

Key Features

• Trade Size Range: Available in 1/4 in., 3/8 in., and 1/2 in. diameters, each at a full 18 in. extended length for access into hard-to-reach wall, ceiling, and floor cavities.
• Working Length: 3" working length across the family supports efficient drilling and wire feed-through.
• Finish: Black oxide coated flutes prevent debris build-up for fast, continuous chip removal.
• Ultra-Sharp Tip: Maximizes durability for fast, straight holes in clean wood or stacked lumber.
• 3-Flat Shank: Eliminates spinning in cordless and corded drill chucks for extra stability.
• Wire-Feed Hole: A small hole in the flute makes feeding cables and wires through the bore effortless.
• Drill Compatibility: Delivers maximum performance in both cordless and corded drill drivers.

Technical Specifications

• Bit Diameter Options: 1/4 in., 3/8 in., 1/2 in.
• Pack Quantity: 1
• Shank: 3-Flat
• Working Length: 3"
• Country of Origin: China

Typical Applications

• Wire and Cable Installation Through Framing
• Drilling in Softwoods, Plywood, and Hardwoods
• Clean Wood and Stacked Lumber Boring
• Residential and Commercial Electrical Rough-In Work
• Hard-to-Reach Wall, Ceiling, and Floor Cavities

Why Diablo?

Diablo's Installer Bit lineup combines an ultra-sharp tip, black oxide coated flutes, and a 3-Flat Shank to deliver dependable, fast drilling performance for electricians and installers who need clean, straight holes and effortless wire feed every time. Choosing from 1/4 in., 3/8 in., or 1/2 in. diameters, each at a full 18 in. length with a 3" working length, makes this a practical, durable lineup for demanding installation projects in clean wood, plywood, and hardwoods.