The 10 Best Auger Drill Bits
Updated by · How we research
Ten wood auger bits and sets compared on nail resistance, reach, shank fit and warranty. The Diablo DAG1110 leads for drilling studs that may hide nails. When users buy our independently chosen editorial recommendations, we may earn commissions to help fund the Wiki.
An auger bit's threaded tip pulls it through the wood, so the drill does the work and the hole comes out deep and straight. That makes it the right tool for running wire and pipe through studs and joists, or for bolting posts. The catch is the shank: an impact driver takes only a small hex, and many big bits don't have one.
Editor's Notes
October 27, 2026, by Ezvid Wiki Admin:
The Diablo DAG1110 now leads the list. It replaces the larger Diablo we had before with a size that suits everyday wiring and plumbing holes, and its edges are made for studs that hide nails. For this update we sorted the bits by the shank each kind of drill takes, read the makers' spec pages and warranty terms, and searched federal recall records for every brand.
Several old picks are gone. The Irwin Tools Speedbor set is no longer sold and was really a spade-style bit, the Milwaukee 3-Piece Set had no current price, and the Drill Master 7-Piece couldn't be found new. The Eagle Tool EA56254 is a flexible wire-fishing bit, a different job. The MAXCCINO Garden Auger takes over from the Yard Butler Roto Earth for planting holes.
The DeWalt DW1687 replaces its thinner sibling, and new arrivals include the Irwin WeldTec for treated lumber, two sets from Crescent and Bosch, and the Greycore 3-Piece for anyone who drills with an impact driver.
September 30, 2020:
Although their designs may vary slightly based on the manufacturer, all of these auger drill bits are good for sinking holes deeply into wooden workpieces quickly and efficiently. Just insert one into a power drill and press down slightly, and the tip and rotating helical blades will create the hole and also remove the resulting wood chips and shavings. Coming on board in this update is the Diablo by Freud DAG1160, which is from a company that’s been making saw blades, router bits, and more for nearly five decades. It incorporates the brand’s signature red color and features deep flutes to enhance the chip evacuation process, to help you work quickly. The shank is quick and easy to remove from the drill, in the event you need to swap it out for another size. It joins an array of other big-name brands in this update, including the reliable six-piece Irwin Tools Speedbor, which includes sizes up to 1-1/4 inches in diameter. It’s well suited for drilling holes for Ethernet cables, water and gas piping, and more.
For a choice that will reduce the amount of torque impact significantly when it makes contact with nails, look to the Bosch Daredevil. This feature makes it suitable for heavy-duty applications and helps increase its lifespan and minimizes damage to your hardware. You can buy it with confidence, thanks to a one-year warranty. For the combination of a durable cutting edge and a flute that ensures speedy debris extraction, the DeWalt DW1681 is hard to beat. Like the Freud model, it’s got a handy ball groove at the end that ensures quick and easy removal from the drill chuck. As mentioned in our last update, for safety’s sake you should wear eye protection during woodworking projects. In addition, always unplug your drill when you’re swapping out bits.
June 26, 2019:
When you’re boring holes into wood, an auger drill bit is often necessary for the job. This centuries-old tool has sharp spurs on the edges of its tip to make sure the hole it’s creating is smooth and uniform throughout. Its fluted design allows for the removal of debris as you work, and it keeps the new hole from becoming clogged with shavings. Most auger bits are intended only for use with wood, although there are exceptions (such as the Yard Butler on our list, which is made to create holes in soil). These tools are well suited for projects like making furniture, constructing a backyard deck or raised garden bed, and more.
Joining our list is the DeWalt DW1681, which is made with an overall length of 17 inches, with a 5/8-inch diameter. It’s built for the long haul, with a hardened alloy steel body and a sturdy, dual-cutting edge. Its self-feed spur quickly penetrates through all types of wood, and the hollow center flute assists with debris extraction. And, you’ll appreciate the convenience afforded by its handy ball groove end that allows you to remove it easily from your drill chuck when you’re done using it.
Another new addition is the sturdy Milwaukee 3-Piece Set, which will help you drill with confidence into any wooden workpiece. These shiny tools come in three commonly used diameters and feature a polished flute finish to which shavings won’t stick. The longer shaft length makes it simple to drill deep without needing an extension. And the signature Milwaukee-red, roll-up pouch certainly comes in handy for organization and portability.
Sadly, the Pit Bull CHIAU0624 eight-bit set leaves the list in his update, due to its lack of availability. Also making an exit is the TruePower 09-0279 Stubby, due to some reported quality issues.
No matter which tool or set you choose, always be sure to follow safe woodworking practices, including protecting your eyes and ears and unplugging power tools when you’re making adjustments to them or swapping out bits.
Special Honors
Timber Tools HolzMaster Double-Cut Timber Tools sells its own HolzMaster Double-Cut auger bits for timber framers and log builders. Each has two spurred cutting edges on a heavy body and a nonstick coating that helps chips slide out, and the company backs them with its own guarantee. They come in several lengths for deep holes through beams and posts, and the same shop also carries WoodOwl ship augers. timbertools.com
Fisch Jennings Pattern Auger Bit Austrian toolmaker Fisch still makes the Jennings pattern auger, the twin-spur, double-twist design patented in the 1850s for use in a hand brace. Its fine screw tip suits hardwood, and its square tapered shank fits a brace, which makes it a good match for restoring old tools or quiet hand work. Fisch also lists hex-shank auger bits for power drills. fisch-tools.com
Length, Diameter And Shank: Matching The Bit To The Job
Ship augers of 17 or 18 inches reach through several joists, a thick post or a stack of framing.
An auger bit has a threaded screw at the tip that pulls it into the wood, spurs that score the rim of the hole, and a deep spiral flute that lifts chips out (Wikipedia: Auger bit). That design is why it bores deeper and cleaner than a spade bit, which is faster but rougher, while a Forstner bit is the choice for shallow, flat-bottomed holes (Axminster Tools).
Pick the length for the job. Short bits of about 6 to 7-1/2 inches fit between studs, where a long bit won't swing. Ship augers of 17 or 18 inches reach through several joists, a thick post or a stack of framing.
Pick the diameter for what goes through the hole: about 3/4 inch for a few runs of cable, 1 inch or more for small pipe and conduit, and a hair over the bolt for post hardware.
Then match the shank to the drill. Impact drivers take only a 1/4-inch hex. Most heavy auger bits use a 7/16-inch hex, sometimes with a ball groove that snaps into right-angle and joist drills. Round shanks fit any three-jaw chuck but can slip if the chuck isn't tight. Irwin's auger page shows how one bit family is sold with several shanks.
Nails, Treated Wood And Making A Bit Last
Old framing hides nails, and a nail is the fastest way to ruin a cheap auger: it chips the lead screw and spurs, and then the bit stops pulling itself in. Bits sold for nail-embedded wood use hardened tips, welded edges or an extra cutting edge to survive an occasional hit. Irwin, for example, welds hardened cutting edges onto its WeldTec bits for nail-embedded, dense and treated lumber (Irwin). Treat that as insurance, not permission: every bit dulls when it meets steel.
Edge count is a trade-off. Timber Tools argues that two-edge augers are stronger than three-edge ones (Timber Tools), while three-edge heads are sold on a smoother cut. For rough work in walls, toughness matters more; for visible holes in furniture or beams, the cleaner cut wins.
To make a bit last, let the screw tip do the feeding instead of leaning on the drill, back the bit out every few inches to clear chips, and keep it dry so the threads don't rust. A dull spur can be touched up with a small auger file. We checked the brands here against U.S. Consumer Product Safety Commission recalls and found no recall of any auger or drill bit.
Drilling Safely Through Framing
A big auger bit turns a drill into a lever. If the screw tip bites and the flutes jam, the drill keeps turning and your wrist goes with it. Use a drill with a clutch or a side handle, start at low speed, and brace the drill against your body or the framing rather than holding it at arm's length.
Before you bore into a finished wall, shut off the circuit and check for cables and pipes with a stud and wire finder: a long bit will go straight through them. Wear eye protection, keep loose gloves and sleeves away from the spinning bit, and wear a dust mask when drilling pressure-treated lumber.
Building codes also limit holes in framing. Under the International Residential Code, a hole bored in a floor joist is generally limited to about a third of the joist's depth and must stay at least 2 inches from the top and bottom edges (ICC: IRC chapter 5). Studs have their own limits (ICC: IRC chapter 6). Local codes can differ, so check with your building department before boring through structural framing.
A garden auger is a different tool that shares the name. It digs soil, not wood, and a buried root or rock can stop it hard, so the same side-handle rule applies.
How we researched this
We compared 22 auger bits and sets, read the makers' and sellers' spec details and warranty terms for the 10 finalists, sorted them by the shank each kind of drill takes, and checked every brand against U.S. Consumer Product Safety Commission recall records. We found no independent lab test of auger bits, so durability claims on this page are attributed to the makers. Updated October 27, 2026 by Ezvid Wiki Admin.
Frequently asked questions
Can I use an auger bit in an impact driver?
Only if the bit has a 1/4-inch hex shank, like the Greycore 3-Piece set. Most heavy auger bits use a 7/16-inch hex or a round shank, which need a drill with a chuck. Big bits also need low speed and a side handle.
Are auger bits universal?
No. Shanks come in 1/4-inch hex for impact drivers, 7/16-inch hex, sometimes with a ball groove for right-angle and joist drills, round shanks for three-jaw chucks, and square tapered tangs for a hand brace.
What size auger bit do I need for a 6x6 post?
Match the hole to the bolt or threaded rod, slightly larger than the bolt as the hardware maker specifies. A 6x6 is about 5-1/2 inches thick, so a short bit may not get through; use a long ship auger or drill from both sides.
Auger, spade or Forstner bit: which should I use?
An auger bit for deep, clean holes through framing and posts, a spade bit for fast rough holes, and a Forstner bit for shallow, flat-bottomed holes in furniture work.
What is the best way to drill hardwood with an auger bit?
Use a sharp bit with hardened or welded edges, run the drill slowly, let the screw tip feed the bit, and back out often to clear chips so the flutes don't pack and bind.
Can a garden auger drill wood?
No. A garden auger is a soil spiral for planting holes. It has no cutting spurs and will tear or jam in wood.
