The Diablo DAG2130 1-1/4 Inch x 13 Inch Auger Bit is a wood-boring accessory built for drilling large, clean holes through framing lumber, studs, joists, and other wood stock, including nail-embedded material. This is an auger bit designed for wood drilling and rough-in hole making. Model Number: DAG2130. If you are running wire, pipe, conduit, or fast rough openings through wood, this bit is aimed at that kind of work.

What makes this bit matter is how it handles real jobsite conditions. A lot of auger bits cut fine in clean lumber and start complaining the second they hit hidden metal or dense framing. Diablo built this one with a two-step cutting action, a self-feeding Dura-Tip, and a dual cutting edge design so it can keep moving through both clean wood and nail-embedded wood. That means fewer stalled cuts, less fighting the tool, and less wasted time when the material is not as friendly as it looked from the outside.

The 1-1/4 inch diameter is a useful size for larger pass-through holes where smaller installer bits or spade bits will not cut it. The 13 inch overall length gives you reach for common framing applications without jumping straight to an extra-long ship auger. For electricians, plumbers, HVAC installers, and remodelers, that balance is practical: enough length to get through typical members, enough diameter for larger lines and bundled runs, and a profile that is still manageable in tight spaces.

Chip removal is a big deal with any auger bit, especially once hole depth increases. Diablo calls out optimized deep flutes here, and that is not filler copy. Better chip ejection helps the bit stay efficient, reduces heat buildup, and keeps the cut from turning into a bind-and-back-out routine. If you are working with a cordless drill driver or impact driver, efficient flute design also helps conserve battery power because the bit spends more time cutting and less time dragging packed chips.

The 7/16 inch hex quick-change shank is another practical upgrade. It gives the bit a secure interface in compatible drill drivers and impact tools, and it is built for quick swaps when you are moving between hole sizes on the fly. That larger hex shank also helps with stability compared to lighter-duty shanks, which matters when you are boring a 1-1/4 inch hole through structural wood and want the bit to stay planted instead of twisting around under load.

From a jobsite-use standpoint, this is not a finish carpentry accessory. It is a production drilling bit for tradespeople who need holes fast and need the bit to survive rough lumber conditions. If you are roughing in electrical, plumbing, or mechanical work, or you are drilling through framing during remodeling where nails may still be in place, this auger bit makes a lot more sense than a general-purpose wood bit. It is also a solid choice for serious DIY users tackling framing, shed builds, deck work, or renovation where clean wood cannot always be guaranteed.

Compatibility is straightforward: Diablo specifies use in corded and cordless impact and drill drivers. That makes the bit easy to drop into common tool setups already on the truck. The big takeaway is simple: this auger bit is designed to cut aggressively, clear chips efficiently, and hold up better in wood that is less than perfect. For users who regularly drill large-diameter holes in framing lumber, that is exactly what matters.

Diablo DAG2130 1-1/4 Inch x 13 Inch Auger Bit Gets the Rough Work Done

This is the kind of auger bit you buy when the wood on site is not always clean and you do not want to baby the cut.

• Who it's for: Electricians, plumbers, HVAC installers, framers, remodelers, and serious DIY users drilling larger holes through framing lumber.
• Why it stands out: The combination of a self-feeding Dura-Tip, two-step cutting action, dual cutting edges, and deep flutes is aimed squarely at faster boring in real-world wood conditions.
• Worth knowing: This is an individual bit, not a kit, and it is best matched with a properly compatible corded or cordless drill driver or impact tool that can handle a 1-1/4 inch auger bit under load.

• What materials is this auger bit made to drill? It is designed for wood and nail-embedded wood.
• What type of shank does it use? It uses a 7/16 in. hex quick-change shank.
• Can it be used with cordless tools? Yes. Diablo specifies compatibility with both corded and cordless impact and drill drivers.
• Is this a general-purpose small hole bit? No. With a 1-1/4 in. cutting diameter, it is meant for larger wood-boring jobs such as rough-in holes through framing members.