DEWALT 20V MAX Flexvolt Advantage Hammer Drill DCD999B - Brushless, Cordless, Bare Tool
DEWALT 20V MAX Flexvolt Advantage Hammer Drill DCD999B - Brushless, Cordless, Bare Tool
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DEWALT 20V MAX Flexvolt Advantage Hammer Drill DCD999B - Brushless, Cordless, Bare Tool

4.7 stars out of 68 reviews
(4.7)|
68 ratings

Key item features

  • Enhanced Power: This 1/2 inch cordless hammer drill delivers up to 42% more power when paired with a DCB606 FLEXVOLT Battery compared to a DCB205 20V MAX 5.0Ah Battery.
  • Included Components: The pack includes one Dewalt DCD999B 20V 1/2-Inch Hammer Drill.
  • Robust Chuck: Features a heavy-duty 1/2 inch ratcheting nitro-carburized metal chuck with carbide inserts for superior bit gripping strength.
  • Advanced Lighting: A 3-mode LED provides illumination in dark or confined spaces, offering up to 20 times brighter light than the Dewalt DCD985.
  • Extended Illumination: The spotlight mode includes a 20-minute shutoff function, allowing for extended work time in dimly lit or restricted areas.
  • Tool Configuration: This product is a brushless, cordless bare tool; the battery and charger are sold separately.
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Columbus, 43215
Arrives by Wed, Feb 4
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5 stars out of 5, based on 4 seller reviews(5.0)
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Customer ratings & reviews

4.7 out of 5 stars
stars68 ratings59 reviews
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Reviews summary

Pros
  • : Provides ample power for demanding tasks.
  • : Offers extra control and stability during use.
  • : Provides increased power with 60v batteries.
  • : Drills through concrete with ease.
  • : Offers variable power application control.
Neutral
  • : Can efficiently drill through tough materials, but may have inconsistent hole quality.
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Showing 1-3 of 59 reviews

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.

Review from dewalt.com
Helpful?6A4EBTDN5DKX780288653
Apr 26, 2021
BuilderBob
5 out of 5 stars review

Amazing cordless drill

[This review was collected as part of a promotion.] I have been using the new DCD999 for several weeks and it is an all around joy to use. The drill is very well balanced – even better balanced than the previous models. Also the rubber overmolding on the grip makes it very comfortable to use. This drill also includes a new, longer side support handle that is befitting a drill that is this powerful and makes it much easier to control. Where this drill shines is the power that it packs with a Flexvolt battery attached. I have used this drill side by side with several previous model DeWalt 18v and 20v hammer-drills drilling into old hardened concrete slabs and nothing can compete with this new drill in speed or torque. Whether you are looking to get your first battery powered hammer-drill or are looking to upgrade from an older model, this drill coupled with a Flexvolt battery will not disappoint.

Review from dewalt.com
Helpful?6A4EBTDN5DKX780288653
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.

Review from dewalt.com
Helpful?6A4EBTDN5DKX780288653