The Diablo 7/8 in. x 17-1/2 in. Auger Bit for Wood and Nail-Embedded Wood is a professional-grade boring bit engineered by Diablo for demanding wood drilling tasks where nails, fasteners, and dense grain are unavoidable. Built for wood framing, plumbing rough-ins, stacked furniture assembly, and gardening applications, this 17-1/2 in. auger delivers the reach and durability needed to bore through hardwoods, softwoods, plywood, and nail-embedded lumber with consistent, clean results. Whether you are running a cordless drill driver on a framing job or pushing through stacked materials with a corded tool, this bit is sized and shaped to keep you drilling efficiently from the first hole to the last.

Key Features

• Two-step cutting action - produces precise, clean holes in wood drilling applications, reducing tear-out and rework on the job site
• Self-feeding Dura-Tip - pulls the bit forward automatically so less downward pressure is needed, making drilling in nail-embedded wood far less fatiguing
• Dual cutting edge design - delivers effortless, smooth hole drilling even when nails are present in the workpiece, protecting both the bit and the tool
• Deep flutes for fast chip removal - evacuates sawdust and debris quickly so the bit stays cool and you get more holes per battery charge on cordless tools
• 7/16 in. hex quick-change shank - locks securely into cordless and corded impact wrenches and drill drivers, increasing stability and reducing wobble for straighter, more accurate bores
• 17-1/2 in. overall length with 13-1/2 in. working length - provides the reach required for through-wall framing, plumbing runs, and deep stacked-material applications
• 7/8 in. diameter - a commonly specified bore size for plumbing, electrical, and structural wood framing tasks

Why This Product

• Designed specifically for nail-embedded wood - the Dura-Tip and dual cutting edge allow continuous drilling without stopping to clear nails or risk damaging your tool, which makes it practical for renovation and remodel framing where reclaimed lumber is common
• Extended 17-1/2 in. length reaches through deep assemblies - ideal for through-wall plumbing rough-ins and stacked framing members where a standard-length bit cannot reach
• Quick-change hex shank works with the cordless tools already on your belt - no adapters required, and the secure fit reduces bit slippage during high-torque drilling in dense hardwoods
• Deep flute design supports longer drilling sessions on a single battery charge - fast chip evacuation keeps the cutting edge clear and efficient, making it a dependable choice for high-volume framing and plumbing applications

Specifications

• Brand: Diablo
• Model Number: DAG3090
• Diameter: 7/8 in.
• Length: 17-1/2 in.
• Working Length: 13-1/2 in.
• Shank: Hex 7/16 in.
• Compatible Tools: Drill/Driver
• Compatible Materials: Hardwoods; Softwoods; Nail-Embedded Wood; Plywood
• Pack Quantity: 1

Approved Applications

• Drilling clean wood and nail-embedded wood
• Wood framing
• Stacked furniture assembly
• Gardening applications
• Plumbing rough-in applications