Diablo DSP3050 7/8 Inch x 16 Inch SPEEDemon Spade Bit is a long-reach wood-boring accessory built for fast, clean holes in wood. This is a spade bit designed for fast, clean wood drilling. Model Number: DSP3050. With a 7/8 inch cutting diameter and 16 inch overall length, it is a practical choice when you need to bore through framing members, reach through deep cavities, or keep your drill farther back from the work area.

The big selling point here is speed with less effort. Diablo uses its SPEED-TIP self-feed design so the threaded tip pulls the bit forward as soon as it bites into the material. On the job, that matters because you spend less time leaning into the drill and more time getting through the hole. If you are drilling a string of pass-through holes for wire, pipe, or general rough work in clean wood, that self-feeding action helps keep the pace up.

This bit is also built to clear chips efficiently. Diablo calls out an optimized curved paddle design that moves material out of the cut faster for more holes per charge when used in cordless tools. That is not just brochure talk. Better chip evacuation helps the bit stay cutting instead of rubbing, which is especially useful on deeper holes where packed chips can slow progress and increase heat.

Hole quality is another reason to look at this bit over a basic paddle bit. The angled spur cutting edge scores the wood before the main body removes material, which helps reduce blowout and leaves a cleaner entry. For rough construction work, cleaner holes mean less splintering around the opening and fewer touch-ups when the work needs to stay tidy.

Diablo makes this bit from high speed steel and pairs that with its Impact Strong shank design for added stability and durability. The hex shank fits tools that accept this style of bit, and the product is specifically intended for use in corded or cordless impact drivers and drill drivers. Minimum chuck size required is 1/4 inch, so it is easy to pair with common jobsite tools.

The 16 inch length is what really separates this bit from a standard short spade bit. That extra reach gives you more clearance when drilling through studs, joists, and other wood members where a short bit forces the drill body too close to the work. If your application calls for longer reach without stepping up to a completely different boring system, this is a straightforward solution.

Best fit for this bit is anyone doing wood boring where speed matters more than a finish-grade hole. Remodelers, electricians, plumbers, framers, and serious DIY users will all get the point of a long self-feeding spade bit like this. If you need a single 7/8 inch wood-boring bit that works in both cordless and corded setups and does not waste time, this one makes sense.

Diablo DSP3050 7/8 Inch x 16 Inch SPEEDemon Spade Bit Gets the Job Done Fast

If you need a long wood-boring bit that starts quickly, clears chips well, and works in the drills you already own, this is a smart pickup.

• Who it's for: Pros and serious DIY users drilling larger holes in wood framing, plywood, softwood, or hardwood with corded or cordless tools.
• Why it stands out: The self-feeding tip, long 16 inch reach, and Impact Strong hex shank make it more useful than a basic short paddle bit when speed and reach matter.
• Worth knowing: This is a single spade bit for wood, not a full set, and it is best suited to fast boring work rather than finish-grade precision holes.

• What material is this bit made to drill? It is designed for wood drilling, including hardwoods, softwoods, and plywood.
• Can this bit be used in an impact driver? Yes. It is intended for use in corded or cordless impact drivers and drill drivers.
• What is the shank style? It uses a hex shank.
• How large and how long is the bit? The bit diameter is 7/8 inch and the overall length is 16 inches.