The DEWALT DCD999T1 20V Max FLEXVOLT Advantage Hammer Drill is a high-performance cordless tool designed for pros who need maximum power and runtime. This kit pairs the DCD999 hammer drill with a 6.0Ah FLEXVOLT battery, delivering up to 42% more power when compared to standard 20V Max 5.0Ah batteries. The brushless motor, 3-speed transmission, and heavy-duty 1/2-inch ratcheting chuck give you the control and durability to handle demanding drilling and fastening tasks.
DEWALT DCD999T1 Hammer Drill Kit Features
FLEXVOLT ADVANTAGE: Up to 42% more power with FLEXVOLT batteries (DCB606 included).
Heavy-duty 1/2-inch metal chuck: Ratcheting chuck with carbide inserts grips bits firmly.
3-speed transmission: Match the speed to the task for better control.
20x brighter LED: 3-mode light with spotlight 20-minute shutoff.
Tool Connect ready: Chip pocket accepts DCE042 for asset management (chip sold separately).
Kit Contents and Battery Compatibility
This kit includes the DCD999T1 hammer drill, one DCB606 6.0Ah FLEXVOLT battery, a 6-amp charger, and a kit bag. It is compatible with all DEWALT 20V Max and FLEXVOLT batteries, so you can work continuously with the batteries you already own.
Features
Up to 42% more power with FLEXVOLT battery technology.
Heavy-duty 1/2-inch ratcheting metal chuck with carbide inserts.
3-speed transmission optimizes torque and speed for each task.
Kit includes 6.0Ah FLEXVOLT battery, 6-amp charger, and bag.
20x brighter LED with spotlight mode and 20-minute shutoff.
LED: 3-mode, 20x brighter
Model: DCD999T1
Chuck Size: 1/2 in
Motor Type: Brushless
Power Source: 20V Max / FLEXVOLT
Product Type: Cordless Hammer Drill Kit
Speed Settings: 3-speed transmission
Battery Included: 6.0Ah FLEXVOLT (DCB606)
Charger Included: 6-amp
Kit Bag Included: Yes
Seller: Workbench World
MPN: DCD999T1
Product Details
FLEXVOLT Advantage Explained
The DCD999T1 automatically boosts power when paired with a FLEXVOLT battery, delivering up to 42% more power than with a standard 5.0Ah battery. This means faster drilling in masonry and concrete, plus the ability to drive large fasteners without stalling. The included DCB606 battery unlocks that extra performance right out of the box.
Chuck Technology
The heavy-duty 1/2-inch ratcheting chuck is engineered with carbide inserts for superior bit grip. It resists slipping under high torque, so you can drill clean holes and drive screws confidently.
On-Tool Controls
The 3-speed transmission lets you switch from high-torque masonry drilling to fast screwdriving with a simple dial. The 3-mode LED illuminates dark work areas, and the spotlight mode runs for 20 minutes after you release the trigger—perfect when working in tight spaces.
Kit Contents
Everything you need to start comes in the box: the DCD999 drill, a 6.0Ah FLEXVOLT battery, a 6-amp charger, and a durable kit bag. The bag keeps tools, batteries, and accessories organized on the way to the job.
Frequently Asked Questions
What's included in the DCD999T1 kit?
The drill, one 6.0Ah FLEXVOLT battery, a 6-amp charger, and a kit bag.
Can I use standard 20V Max batteries?
Yes, it works with all DEWALT 20V Max and FLEXVOLT batteries.
How much more power does it deliver with FLEXVOLT?
Up to 42% more power compared to a standard 20V Max 5.0Ah battery.
Is the motor brushless?
Yes, the brushless motor increases efficiency and durability.
Does it have a work light?
Yes, a 3-mode LED with 20-minute spotlight shutoff.
5.0★★★★★★★★★★(5)
5 ★5
4 ★0
3 ★0
2 ★0
1 ★0
Customer Photos
5
Customer Reviews
5
★★★★★★★★★★5.0
Chad W.
Verified
Hammer drill beast
Hammer drill beast. So strong.
★★★★★★★★★★5.0
Lori Z.
Verified
Drills concrete
Drilled through concrete like butter. The battery lasts long.
★★★★★★★★★★5.0
Dale F.
Verified
Replaced my corded drill
I'm a electrician and this drill has replaced my corded one. The power is amazing. It drills into masonry without slowing down. The chuck is metal and holds bits securely. The kit includes a bag and charger, which is convenient. The battery charges quickly. The only downside is the weight, but it's expected with such power. Highly recommend.
★★★★★★★★★★5.0
S. T.
Verified
Great drill
Great drill. I've had many.
★★★★★★★★★★5.0
Rosa V.
Verified
Versatile
Works well. I've used it for framing and concrete. No complaints.