The Diablo DAG2070 Auger Drill Bit is a 3/4 in. x 13 in. auger drill bit built for drilling holes in wood and nail-embedded wood. This is a auger drill bit designed for deep wood drilling and rough-in boring where hidden nails can be part of the job. Model Number: DAG2070. If you need a bit that can bore clean holes in framing lumber, old wood, or repaired sections without folding up the first time it touches metal, this is the kind of bit you reach for.

What makes this bit matter is how the cutting geometry works in real use. Diablo uses a two-step cutting action to help the bit start clean and stay on track, while the dual cutting edge design keeps the cut moving smoothly through the material. On a ladder, in a stud bay, or drilling repeated pass-throughs for plumbing and electrical work, that cleaner entry and steadier feed saves time and reduces the fight.

The Dura-Tip is the big story here for anyone drilling into existing wood where nails are always a possibility. Instead of treating nail contact like a job-ending surprise, this bit is built for that kind of abuse. That makes it a practical choice for remodelers, framers, and service trades working in older structures or patched framing where you do not always know what is buried in the lumber.

Deep flutes are not just a spec to fill space on a package. They help move chips out of the hole faster, which keeps the bit cutting instead of packing up. In the real world, better chip removal means smoother progress on deeper holes and fewer stops to clear debris. It also helps cordless users get more work done per charge because the tool is not wasting effort recutting packed chips.

The 7/16 in. hex quick-change shank is another practical advantage. It is sized for a stable connection in compatible corded and cordless impact and drill drivers, which matters when you are putting real torque into a 3/4 in. boring bit. A secure shank reduces slipping and gives the tool a more solid feel when the bit starts pulling itself through the wood.

As an accessory, this bit is straightforward but purpose-built. It is sold as a single bit and is sized at 3/4 in. diameter with a 13 in. overall length and a 7/16 in. shank. That combination makes it a useful middle-ground size for running lines, boring structural members where code allows, and handling general wood drilling that calls for more reach than a short utility bit.

This Diablo auger bit is a strong fit for carpenters, remodelers, plumbers, electricians, and serious DIY users who work in wood often enough to know that hidden nails happen. It is not a fine finish bit for cabinet-grade exit holes. It is a jobsite auger bit made to bore fast, stay productive, and hold up in rough material where standard bits tend to quit early.

Diablo DAG2070 Auger Drill Bit for Rough Wood Work

This is the kind of auger bit you buy when the wood is not perfect, the job needs to move, and hidden nails are a real possibility.

• Who it's for: Pros and serious DIY users boring holes in framing, repair lumber, and other wood where nail contact can happen.
• Why it stands out: The mix of two-step cutting action, Dura-Tip durability, deep flutes, and a 7/16 in. hex shank makes it more jobsite-ready than a basic wood-boring bit.
• Worth knowing: This is a utility and rough-in bit, not a fine finish bit. If you want speed, durability, and a bit that keeps working in ugly material, it makes a lot of sense.

• What materials is this bit designed for? It is designed for wood and nail-embedded wood.
• What is the shank size? It uses a 7/16 in. hex shank.
• Can it be used in cordless tools? Yes. Diablo states it can be used in corded and cordless impact and drill drivers.
• What size hole does it drill? This auger bit drills a 3/4 in. hole.