Diablo DAG3140 1-1/4″ x 17-1/2″ Auger Bit

Self-Feeding Dura-Tip™ Pull Action. Effortless Dual Cutting Edge Design. Deep Flutes for High-Speed Chip Evacuation.

The Diablo Wood Auger Bit uses a self-feeding Dura-Tip™ and dual cutting edges to drill large holes through nail-embedded wood, offering maximum performance and speed.

The Wood Auger Bit brings aggressive material separation, extreme tool durability, and massive depth-drilling reach straight to your construction framing site or remodeling layout. Purpose-built to eliminate the frustrating binding of standard spade bits when striking hidden fasteners, the rapid battery drain on cordless drill drivers from slow chips, and the jagged breakout holes that ruin large wire pulls, this premium heavy-duty 17-1/2" long auger bit sets an absolute industry standard. It equips framing carpenters, commercial rough plumbers, residential construction electricians, and timber framers with a high-performance boring tip optimized to punch wide 1-1/4" holes through thick laminated veneer lumber (LVL) beams, bore utility passages across multi-layered wall studs, and clear deep timbers without snagging.

Advanced material evacuation geometry and rugged fastener-eating metallurgy serve as the structural framework for this robust tool. Heat-treated for extreme break-resistance, the bit features a specialized self-feeding Dura-Tip™ that dynamically pulls the tool through the densest grains without forcing the operator to push down on the machine chassis. The advanced two-step dual cutting edge setup slices clean channels while shredding embedded nails seamlessly. To maximize runtime on professional 18V cordless platforms, the auger is engineered with deep, open flutes that throw out wood chips rapidly to prevent frictional clogging, while the quick-change hex shank increases rotational stability inside modern heavy-duty impact wrenches and drill drivers alike.

Why the Diablo® DAG3140 17-1/2" Long Auger Bit Commands the Framing Deck:

• Self-Feeding Dura-Tip™ Technology: Threaded lead screw pulls the bit into hard woods automatically, eliminating the heavy downward operator body pressure required by generic drills.
• Aggressive Nail-Eating Dual Edges: Two-step cutting action splits wood fibers and slices straight through hidden nails, delivering an exceptionally smooth, uniform borehole.
• Deep High-Capacity Evacuation Flutes: Wide channel gaps exhaust wood debris out of the deep shaft instantly, preserving cordless tool battery life by cutting friction-load drag.
• Heavy-Duty Quick-Change Hex Shank: Delivers a secure, slip-free interface inside quick-release impact drivers and high-torque chucks to stop shaft spin-out.
• Extreme 17-1/2" Reach Portfolio: Long structural length enables trade pros to drill through multiple stacked studs or thick floor headers in a single continuous pass.

Specifications