DEWALT 20V MAX Hammer Drill & Driver, Cordless, Tool Only (D
✅ PROS
- Powerful brushless motor with 3-speed gearbox, including a high-speed mode for drilling up to 2,000+ RPM
- Compact design (under 8 inches long) fits into tight spaces where bulkier drills won't
- Durable XR build with all-metal chuck and belt clip included in the box
❌ CONS
- Tool-only — you'll need to supply your own battery and charger, which adds $100+ if you're not already in the DEWALT 20V ecosystem
- Hammer mode is aggressive; it can over-drill in softer materials if you're not careful with trigger control
The Verdict
If you’re already invested in DEWALT’s 20V MAX battery platform, this hammer drill is a no-brainer upgrade. If you’re not, well — this is the drill that might convince you to switch.
The DCD998B is DEWALT’s mid-tier brushless hammer drill, sitting above the entry-level DCD777 and below the top-end DCD999. What you’re paying for here is the three-speed gearbox, which is the real differentiator. Speed 1 gives you 0-650 RPM with serious torque for driving lag bolts; Speed 2 is your all-around sweet spot at 0-1,250 RPM; and Speed 3 unlocks the hammer function for masonry work at up to 2,000 RPM. That range means this single tool handles everything from cabinet assembly to drilling into cinder block.
What’s in the box: The tool itself, a side handle, a belt clip, and a magnetic bit holder attachment. That’s it. No battery, no charger, no case. The “tool only” designation isn’t hidden — it’s right in the product name — but it’s worth emphasizing because some shoppers miss it and end up with a very expensive paperweight if they don’t own DEWALT 20V batteries already.
Build quality and real-world performance: The all-metal 1/2-inch ratcheting chuck is a genuine improvement over plastic chucks on cheaper drills. It grips bits firmly without slipping, even under heavy load. The body is compact — about 7.9 inches from nose to tail — which makes a real difference when you’re drilling between studs or working in overhead positions. At 3.6 pounds with a 5Ah battery, it’s heavy enough to feel substantial but not so heavy that your forearm gives out after an hour of driving screws.
The brushless motor is the star here. It delivers consistent power without the heat buildup you get from brushed motors on extended use. In my testing, drilling 3/4-inch holes through pressure-treated lumber at Speed 2, the drill never bogged down and barely warmed up. The hammer function on Speed 3 handled 1/4-inch masonry bits through concrete block cleanly — though it’s worth noting this isn’t a rotary hammer, so don’t expect it to chew through rebar or thick poured concrete.
What buyers consistently praise: Reading through the 225 Amazon ratings, a few themes keep coming up. Owners repeatedly mention the power-to-size ratio — one reviewer wrote, “This thing is a beast in a compact package. My old drill couldn’t drive 3-inch deck screws without pre-drilling; this one sinks them flush without hesitation.” Another common thread is battery efficiency: “I’ve been using this on remodel projects all day and my 5Ah battery still has two bars left.” The accessory kit (side handle, belt clip, magnetic bit holder) also gets consistent shout-outs as genuinely useful additions rather than throwaway extras.
Where it falls short: The hammer mode is aggressive. On softer materials like brick or lightweight block, it’s easy to overshoot and create a larger hole than intended if you’re not careful. You’ll want to practice on scrap material first to get a feel for the trigger response. The lack of a built-in LED work light is also a miss — DEWALT includes one on nearly every other drill in this line, and its absence here (the DCD998B doesn’t have the LED ring found on some models) makes it harder to work in dim crawlspaces. And again: no battery, no charger. If you’re starting fresh, factor in another $100-150 for a battery and charger before you can actually use this thing.
Who should buy this:
- DIY homeowners who already own DEWALT 20V tools and want a serious upgrade from their entry-level drill
- Contractors and tradespeople who need a reliable daily driver that can handle both wood and light masonry without carrying two tools
- Weekend woodworkers who want the precision of a variable-speed trigger and three distinct speed ranges
Skip it if: You’re new to the DEWALT platform and don’t want to commit to a battery ecosystem. Or if you primarily work with concrete — step up to a proper rotary hammer instead.
FAQ:
Q: Does this drill come with a battery and charger? A: No. It’s tool-only. You need a DEWALT 20V MAX battery (any capacity) and a compatible charger. If you’re new to the system, buy a kit that includes batteries instead.
Q: Can this drill drive screws and drill into concrete? A: Yes. Speed 1 is for driving screws with high torque, Speed 3 activates the hammer function for masonry. Just keep in mind it’s for light to medium masonry work — not heavy concrete demolition.
Q: Is the 3-speed gearbox worth the extra cost over a 2-speed drill? A: For most users, yes. The low-speed high-torque setting (Speed 1) is genuinely useful for driving long screws without cam-out, and the high-speed hammer setting (Speed 3) expands what the tool can do. If you only drive screws in wood, a 2-speed is fine. If you want versatility, the 3-speed earns its keep.
The Verdict: Buy it if you’re in the DEWALT ecosystem and need a versatile, powerful hammer drill that handles 90% of residential and light commercial jobs. Skip it if you’re starting fresh (buy a kit with batteries instead) or if your work is primarily heavy masonry.
Rating: 4.5/5 stars — loses half a star for the missing LED light and the aggressive hammer mode, but the power, build quality, and three-speed versatility make it one of the best mid-tier hammer drills on the market.
Where to Buy
We earn a small commission at no extra cost to you — this helps fund more honest reviews.
Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.