Dewalt 20V MAX Li-Ion Cordless Brushless 1/2 in. Hammer Drill/Driver DCD999B
Dewalt 20V MAX Li-Ion Cordless Brushless 1/2 in. Hammer Drill/Driver DCD999B
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Dewalt 20V MAX Li-Ion Cordless Brushless 1/2 in. Hammer Drill/Driver DCD999B

4.7 stars out of 71 reviews
(4.7)|
71 ratings

Key item features

  • This 1/2 in. Cordless Hammer Drill has up to 42% more power when paired with a DCB606 FLEXVOLT Battery vs. a DCB205 20V MAX 5.0Ah Battery.
  • Battery and charger sold separately.
  • Pack Includes: (1) Dewalt DCD999B 20V 1/2-Inch Hammer Drill
Current price is $192.55
Price when purchased online
  • Free shipping
  • Free 30-day returns
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Columbus, 43215
Arrives between Apr 15 - Apr 17
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Sold and shipped by COZZY SHOPPING INC
4 stars out of 5, based on 19 seller reviews(4.0)
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Customer ratings & reviews

4.7 out of 5 stars
stars71 ratings61 reviews
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Reviews summary

Pros
  • : Provides ample power for demanding tasks.
  • : Provides increased power with 60v batteries.
  • : Offers extra control and stability during use.
  • : Drills through concrete with ease.
Neutral
  • : Can efficiently drill through tough materials, but may have inconsistent hole quality.
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Showing 1-3 of 61 reviews

Feb 23, 2026
Texasj713
5 out of 5 stars review

This drill is what made me a dewalt fan for life

Absolute Beast (But keep your chiropractor on speed dial) Let me start by saying this drill is a powerhouse. If you want something that will drive fasteners and bore holes with zero hesitation, the DCD999 is exactly what you need. However, a word of caution: this tool does not care about your puny human joints. The "Incident": I was tackling what I thought was a simple job—drilling a hefty hole straight through a tree. I had a heavy-duty bit chucked in, gripping the drill confidently like I was the boss. Everything was going smoothly until the bit caught a massive, stubborn knot deep in the wood. Did the DCD999 stall? Did it bog down and ask for a breather? Absolutely not. It dug its heels in and decided that if the bit wasn't going to spin, I was going to spin. ​In a split second, this yellow-and-black torque monster engaged in a full-blown alligator death roll with my wrist. I was about half a rotation away from my arm snapping into a human pretzel. The drill literally wrenched itself out of my hands, hit the dirt, and just sat there looking at me like, "Who's next?" ​Pros: ​Unstoppable Power: Seriously, pair it with a FlexVolt battery and it will chew through anything. ​Build Quality: It survived the drop without a scratch after it tried to take my arm off. I've spent plenty of time taking DeWalt tools apart and putting them back together to fix them, but this beast didn't even need a checkup. Chuck Grip: Holds onto bits tighter than I apparently hold onto the drill. ​Cons: Will actively test your grip strength and the integrity of your rotator cuff. ​The Verdict: Buy it. It's easily one of the best drills out there. Just do yourself a favor and use the included side handle. Seriously, folks. Use the side handle, or prepare to learn how to write with your other hand.

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May 30, 2025
jotarojoestar
5 out of 5 stars review

Feels like new after owning for a year

Used this tool on stainless steel bathroom partitions while installing them, cement and brick for installing doors, and mostly drywall installing shelving systems in closets. Thousands of holes and different materials and the drill still feels new. No lack of power, head still closes around bits as if new. It just feels like a new tool about a year after buying it. I mainly compare it to using an impact for a while and the impact gets worse and worse. Im a carpenter by trade and an amateur woodworker.

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Apr 21, 2021
Mandahoy829
5 out of 5 stars review

The flashlight feature is *chef's kiss*

[This review was collected as part of a promotion.] I received this drill as part of free promotion for review. The drill is pretty standard for DeWalt, so it's already great. I used it to clean up several spots in our deck. There's extra grip material even beyond the grip area that's great for ease of use. The most impressive part. to me is the light feature. I've had DeWalt drills in the past that would only light while the trigger was pulled. With this drill, you can set it so that the light stays on! Even more, there are settings that allow you to have low, medium, and high light settings. Lastly, the high setting simultaneously sets it to be lit for 20 minutes. I tested this for five of the twenty, and the light didn't flicker once. This would really be excellent for folks who do a lot of work in lowly lit areas. The brushless feature is great, too.

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