Irwin WeldTec 7/16 in. D X 17 in. L Auger Bit

Meet the Irwin WeldTec 7/16 in. D x 17 in. L Auger Bit — a purpose-built long-reach wood-boring solution that combines durable construction with effortless bit changes for demanding drilling jobs.

• Heat-treated for longer life: The WeldTec design uses heat-treated steel to resist wear and maintain a sharp cutting edge through repetitive drilling, helping you finish more work with fewer bit replacements.
• Deep reach, clean holes: At a full 17 inches in length, this auger bit delivers deep, straight holes in thick stock, studs, or laminated lumber, reducing the need for multiple drill passes.
• Optimal hole size: A 7/16-inch diameter strikes a balance between rapid material removal and precise clearance for dowels, wiring, or piping paths.
• Fast, secure changes with a Quick-Change Hex Shank: The hex shank design enables quick, slip-resistant changes in compatible drills or impact drivers, saving you time on the jobsite.
• Trusted WeldTec lineage: Built under Irwin’s WeldTec family, this bit is engineered for tough woodworking tasks where reliability matters as much as performance.
• One piece per package: Ready to tackle a single focused job or pair with other bits for a full-length project lineup.

Why this matters in real-world work: when you’re drilling through thick lumber, framing studs, or running electrical cables and plumbing through long spans, you need a bit that won’t bend, dull, or require constant retracing. The 7/16 in. WeldTec auger bit delivers steady cutting action, precise hole geometry, and the robustness to stand up to professional use in demanding environments.

Ideal use cases include electrical conduit runs, wiring through studs, dowel joinery in timber framing, and any project requiring clean, deep holes with minimal wandering.

Pro tips for best results:
- Start with a light, steady feed and let the bit bite into the grain to prevent splintering.
- If you’re drilling through very hard or knotty wood, maintain a slower speed and pause occasionally to clear chips.
- Withdraw the bit periodically to clear debris and prevent binding, then resume for a clean exit.

With its long reach, durable construction, and convenient quick-change capability, the Irwin WeldTec 7/16 in. D x 17 in. L Auger Bit is a dependable choice for professional carpenters, electricians, and serious DIYers tackling deep-hole tasks in wood.