The Diablo DSP2150-P2 1-1/4 Inch x 6 Inch SPEEDemon Spade Bit 2-Pack is a wood-drilling accessory built for fast, clean hole making with corded or cordless drills and impact drivers. This is a spade drill bit designed for drilling clean holes in wood. Model Number: DSP2150-P2. With a 1-1/4 inch diameter, 6 inch length, and a 2-piece pack, it is aimed at electricians, plumbers, remodelers, framers, and serious DIY users who need to move through studs, joists, and other wood stock without wasting time.

What matters most here is how the bit starts and feeds. Diablo uses its SPEED-TIP threaded tip to pull the bit into the work with less pressure than a traditional spade bit. On the job, that means faster starts, less wandering at the surface, and less fatigue when you have a stack of rough-in holes to drill. If you are boring repeated pass-through holes for pipe or cable, that self-feeding action is the feature you will notice first.

The paddle shape is not just for looks. Diablo calls out an optimized curved paddle design that improves chip removal, and that matters when you are drilling larger-diameter holes in wood. Better chip ejection helps keep the bit cutting instead of binding up with packed debris. That is especially useful on cordless tools, where efficient cutting can help stretch runtime and reduce the need to lean hard on the drill.

This bit is made from high speed steel and uses an Impact Strong shank design to improve shank stability and durability. In plain terms, it is built to handle the stop-start load you get from modern cordless tools and impact drivers. The hex shank also gives you a secure drive interface, which is what you want when spinning a 1-1/4 inch spade bit through framing lumber.

Diablo also uses an angled spur cutting edge that scores the wood ahead of the main cut. That helps produce cleaner holes with reduced blowout compared to a basic flat spade bit edge. If the finish of the hole matters, like visible utility penetrations, trim work support pieces, or cleaner rough-ins through softwood and plywood, that scoring action helps keep the cut more controlled.

In terms of fit and use, this spade bit is intended for clean wood applications and works in corded or cordless impact and drill drivers. It has a 1/4 inch minimum chuck size requirement and a 10 mm shank diameter, so it is built around common drill and driver platforms rather than a specialty machine. It is a simple accessory, but it is designed around the way most people actually drill holes on a jobsite now, which is with cordless tools.

If you are choosing between a general-purpose wood bit and something purpose-built for quick rough work, this is the better call when speed matters more than furniture-grade finish. The Diablo DSP2150-P2 makes the most sense for rough carpentry, framing, electrical and plumbing rough-in, deck work, and general remodeling where you need a 1-1/4 inch hole in wood and you need it fast. For users who want faster feed, cleaner entry, and better chip clearing than an old-school spade bit, this one earns its place in the pouch.

A better spade bit for fast wood rough-ins

The Diablo DSP2150-P2 1-1/4 Inch x 6 Inch SPEEDemon Spade Bit 2-Pack is the kind of accessory that saves time every time you pull the trigger.

• Who it's for: Anyone drilling repeated larger holes in wood, especially electricians, plumbers, framers, remodelers, and DIY users doing rough-in work.
• Why it stands out: The threaded SPEED-TIP, chip-clearing paddle design, and angled spur edge work together to make faster starts, cleaner holes, and smoother drilling than a basic spade bit.
• Worth knowing: This is made for clean wood drilling and ships as a 2-pack of bits only. If you want neat, quick holes in framing lumber with your drill or impact driver, this is a smart buy.

• What material is this bit designed to drill? It is designed for wood and is specifically positioned for use in clean wood.
• Can this spade bit be used in cordless drills? Yes. It can be used in corded or cordless impact and drill drivers.
• What size hole does it drill? This bit has a 1-1/4 inch diameter.
• What is the shank style? It uses a hex shank for secure fitment in compatible tools.