Bare tools offer flexibility and value if you already own a battery and charger. It features a DEWALT-built high power, high efficiency brushless motor that delivers up to 57% more run time over brushed. This hammer drill is ideal for most drilling and hammering applications.
Bare tools offer flexibility and value if you already own a battery and charger. It features a DEWALT-built high power, high efficiency brushless motor that delivers up to 57% more run time over brushed. This hammer drill is ideal for most drilling and hammering applications.
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The lowest price for DeWalt Flexvolt Advantage 20V MAX* Hammer Drill, Cordless, 1/2-Inch, Tool Only (DCD999B) right now is $380.00 at Ubuy Australia.
The all-time low was $59.00 on 11 May 2026 — today's price is 544% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 31 Oct 2026.
DeWalt Flexvolt Advantage 20V MAX* Hammer Drill, Cordless, 1/2-Inch, Tool Only (DCD999B)
Bare tools offer flexibility and value if you already own a battery and charger. It features a DEWALT-built high power, high efficiency brushless motor that delivers up to 57% more run time over brushed. This hammer drill is ideal for most drilling and hammering applications.
Bare tools offer flexibility and value if you already own a battery and charger. It features a DEWALT-built high power, high efficiency brushless motor that delivers up to 57% more run time over brushed. This hammer drill is ideal for most drilling and hammering applications.
Last updated at 31/10/2026 16:40:13
DEWALT 20V MAX XR 1/2 in. Cordless Hammer Drill, Brushless Motor, 2-Speed Transmission, 0-38,250 BPM, LED Work Light, 1/2 in. Keyless Chuck, Battery
Delivery between 5–9 Nov $41
originally posted on Dewalt
Wow! I am super happy with this drill! I am upgrading from my older DCD995 which was a powerful drill already at 650Watts. This one is 860W with a regular 20V battery. That already compares to a 120V corded drill. 1200+ Watts with a 60V battery is significantly beyond that! It’s definitely a prudent decision to use the drill handle in that mode of operation. The clutch works well whenever bit you are using jams (hole saws usually) - it reacts pretty much instantly. I made the mistake of using this to try and level my trailer. In that case it didn’t sense a jam and basically tore itself out of my hands. I’m pretty strong so that really surprised me (and yes, that did hurt) and gave me deep instant respect for the power this thing has. i was also very pleased to see ... MoreWow! I am super happy with this drill! I am upgrading from my older DCD995 which was a powerful drill already at 650Watts. This one is 860W with a regular 20V battery. That already compares to a 120V corded drill. 1200+ Watts with a 60V battery is significantly beyond that! It’s definitely a prudent decision to use the drill handle in that mode of operation. The clutch works well whenever bit you are using jams (hole saws usually) - it reacts pretty much instantly. I made the mistake of using this to try and level my trailer. In that case it didn’t sense a jam and basically tore itself out of my hands. I’m pretty strong so that really surprised me (and yes, that did hurt) and gave me deep instant respect for the power this thing has. i was also very pleased to see that the chuck is the same great carbide chuck as my DCD995. I noticed also another reviewer mentioned the forward/lock/reverse button didn’t work that well (would not lock out in Center position) but the one I have works great. I have had that problem though with a few other dewalt tools I’ve had over the years - the slider skips past the center position. But this one has real definite clicks and is easy to confidently lock. I
originally posted on Dewalt
Very nice hammer drill.Well packaged with no apparent damage to the box or contents.Heavy-duty feel, well balanced.It has a good ergonomic grip.Excellent removable belt clip. The manual does not state as to whether or not the belt clip mounting is ambidextrous or not, but it appears to be.Good chuck knurling ensures a no-slip grip for tightening bits.Smooth chuck action to tighten/loosen bits.Smooth ratchet-type tightening action.Firm torque indicator dial stays in the desired torque position.The torque indicator has large number font and ensures you know what the setting is at a glance, but the indicator arrow should be black to contrast it from the case.The speed selector switch locks firmly in the desired position, but is difficult to ... MoreVery nice hammer drill.Well packaged with no apparent damage to the box or contents.Heavy-duty feel, well balanced.It has a good ergonomic grip.Excellent removable belt clip. The manual does not state as to whether or not the belt clip mounting is ambidextrous or not, but it appears to be.Good chuck knurling ensures a no-slip grip for tightening bits.Smooth chuck action to tighten/loosen bits.Smooth ratchet-type tightening action.Firm torque indicator dial stays in the desired torque position.The torque indicator has large number font and ensures you know what the setting is at a glance, but the indicator arrow should be black to contrast it from the case.The speed selector switch locks firmly in the desired position, but is difficult to move.The trigger lock is a good feature for tool transport.The trigger force is good with predictable speed feedback.RPM verbiage font on the drill is too small to be of any use. I can barely read it with my glasses.No instructions for chuck removal, although there’s a hex nut on the chuck.After the warranty, a consumer must go to service center for a simple chuck replacement.After a few uses, the wording on the chuck will be illegible.Side handle grip feels plastic-like with limited grip.Side handle clamp has a hole with no explanation as to its purpose.Side handle works great ambidextrously as described, but installation of the side handle is only shown for right-handed use.Forward/reverse control button should be about three millimeters higher. Being left-handed, the lock and reverse direction position occasionally gets activated with my index finger. The left hand index finger naturally rests just above the trigger when gripping the drill without wanting to unintentionally pull the trigger. This natural action interferes with the direction of the position switch. For right-handed users, the forward control position is active, since it is already fully depressed for forward direction.Lighting feature- The spotlight feature is good. The instruction manual does not show what switch position is what. A simple illustration is needed. There’s no discernable difference between the first and second light switch setting. The third setting, which only “20” is legible, is obvious that it will stay lit for 20 minutes as stated in the manual.OperationInstruction ManualNeeds a QR code to link to a URL to show instructions, FAQs, how-to videos, etc.With this link, instructions could be updated on demand in any language. Consumers can read from a larger screen if desired, rather than written small font.
originally posted on Dewalt
I've had many Dewalt drills and they have been great. I wore out my last drill after several years so I bought a new DCD999 to replace it. the runout on the chuck is terrible. I used it for the first time yesterday and the runout was so bad the drill shook in my hand while trying to drill an 1/8" hole. The bit is straight. I had to use another drill to drill the hole. This one is going back. I'll take a battery and a precision rod with me to test the replacement before buying.
| Tool Type | Cordless Hammer Drill/Driver, Hammer Drill |
| Power Type | Cordless |
| Power Voltage | 20V |
| Amperage | 5 A |
| Chuck Size | 1/2 in. |
DEWALT 20V MAX XR 1/2 in. Cordless Hammer Drill, Brushless Motor, 2-Speed Transmission, 0-38,250 BPM, LED Work Light, 1/2 in. Keyless Chuck, Battery
Delivery between 5–9 Nov $41
Wow! I am super happy with this drill! I am upgrading from my older DCD995 which was a powerful drill already at 650Watts. This one is 860W with a regular 20V battery. That already compares to a 120V corded drill. 1200+ Watts with a 60V battery is significantly beyond that! It’s definitely a prudent decision to use the drill handle in that mode of operation. The clutch works well whenever bit you are using jams (hole saws usually) - it reacts pretty much instantly. I made the mistake of using this to try and level my trailer. In that case it didn’t sense a jam and basically tore itself out of my hands. I’m pretty strong so that really surprised me (and yes, that did hurt) and gave me deep instant respect for the power this thing has. i was also very pleased to see ... MoreWow! I am super happy with this drill! I am upgrading from my older DCD995 which was a powerful drill already at 650Watts. This one is 860W with a regular 20V battery. That already compares to a 120V corded drill. 1200+ Watts with a 60V battery is significantly beyond that! It’s definitely a prudent decision to use the drill handle in that mode of operation. The clutch works well whenever bit you are using jams (hole saws usually) - it reacts pretty much instantly. I made the mistake of using this to try and level my trailer. In that case it didn’t sense a jam and basically tore itself out of my hands. I’m pretty strong so that really surprised me (and yes, that did hurt) and gave me deep instant respect for the power this thing has. i was also very pleased to see that the chuck is the same great carbide chuck as my DCD995. I noticed also another reviewer mentioned the forward/lock/reverse button didn’t work that well (would not lock out in Center position) but the one I have works great. I have had that problem though with a few other dewalt tools I’ve had over the years - the slider skips past the center position. But this one has real definite clicks and is easy to confidently lock. I
Very nice hammer drill.Well packaged with no apparent damage to the box or contents.Heavy-duty feel, well balanced.It has a good ergonomic grip.Excellent removable belt clip. The manual does not state as to whether or not the belt clip mounting is ambidextrous or not, but it appears to be.Good chuck knurling ensures a no-slip grip for tightening bits.Smooth chuck action to tighten/loosen bits.Smooth ratchet-type tightening action.Firm torque indicator dial stays in the desired torque position.The torque indicator has large number font and ensures you know what the setting is at a glance, but the indicator arrow should be black to contrast it from the case.The speed selector switch locks firmly in the desired position, but is difficult to ... MoreVery nice hammer drill.Well packaged with no apparent damage to the box or contents.Heavy-duty feel, well balanced.It has a good ergonomic grip.Excellent removable belt clip. The manual does not state as to whether or not the belt clip mounting is ambidextrous or not, but it appears to be.Good chuck knurling ensures a no-slip grip for tightening bits.Smooth chuck action to tighten/loosen bits.Smooth ratchet-type tightening action.Firm torque indicator dial stays in the desired torque position.The torque indicator has large number font and ensures you know what the setting is at a glance, but the indicator arrow should be black to contrast it from the case.The speed selector switch locks firmly in the desired position, but is difficult to move.The trigger lock is a good feature for tool transport.The trigger force is good with predictable speed feedback.RPM verbiage font on the drill is too small to be of any use. I can barely read it with my glasses.No instructions for chuck removal, although there’s a hex nut on the chuck.After the warranty, a consumer must go to service center for a simple chuck replacement.After a few uses, the wording on the chuck will be illegible.Side handle grip feels plastic-like with limited grip.Side handle clamp has a hole with no explanation as to its purpose.Side handle works great ambidextrously as described, but installation of the side handle is only shown for right-handed use.Forward/reverse control button should be about three millimeters higher. Being left-handed, the lock and reverse direction position occasionally gets activated with my index finger. The left hand index finger naturally rests just above the trigger when gripping the drill without wanting to unintentionally pull the trigger. This natural action interferes with the direction of the position switch. For right-handed users, the forward control position is active, since it is already fully depressed for forward direction.Lighting feature- The spotlight feature is good. The instruction manual does not show what switch position is what. A simple illustration is needed. There’s no discernable difference between the first and second light switch setting. The third setting, which only “20” is legible, is obvious that it will stay lit for 20 minutes as stated in the manual.OperationInstruction ManualNeeds a QR code to link to a URL to show instructions, FAQs, how-to videos, etc.With this link, instructions could be updated on demand in any language. Consumers can read from a larger screen if desired, rather than written small font.
I've had many Dewalt drills and they have been great. I wore out my last drill after several years so I bought a new DCD999 to replace it. the runout on the chuck is terrible. I used it for the first time yesterday and the runout was so bad the drill shook in my hand while trying to drill an 1/8" hole. The bit is straight. I had to use another drill to drill the hole. This one is going back. I'll take a battery and a precision rod with me to test the replacement before buying.
Dewalt reviewsI was sent the flexvolt advantage hammer drill DCD999 and a 6.0 flexvolt battery as a sample. Overall I am very impressed and can notice an increase in power from a 5.0 20V battery compared to the 6.0 60V flexvolt. I have used this drill to mix several 5 gallon buckets of drywall mud, drill 6” holes in Sheetrock and other small drill tasks such as driving screws and making smaller holes with paddle bits. I usually use my flexvolt mixer to mix mud and concrete but decided to try the flexvolt advantage drill to see how it would mix and it did very well without bogging down at all and could definitely tell a difference in power from my regular brushless 20V drill which would normally struggle some to mix something this thick. The 999 comes with a nice ... MoreDewalt reviewsI was sent the flexvolt advantage hammer drill DCD999 and a 6.0 flexvolt battery as a sample. Overall I am very impressed and can notice an increase in power from a 5.0 20V battery compared to the 6.0 60V flexvolt. I have used this drill to mix several 5 gallon buckets of drywall mud, drill 6” holes in Sheetrock and other small drill tasks such as driving screws and making smaller holes with paddle bits. I usually use my flexvolt mixer to mix mud and concrete but decided to try the flexvolt advantage drill to see how it would mix and it did very well without bogging down at all and could definitely tell a difference in power from my regular brushless 20V drill which would normally struggle some to mix something this thick. The 999 comes with a nice screw on handle which is longer and makes it easier to use compared to the ones that came with the 996 model. It also comes with the standard belt clip too. One thing I wish DeWalt would add to more of their drills is an E-clutch to save your wrist when using large hole saws or mixing, this flexvolt advantage does not have any sort of emergency stop. The overall drill is almost identical to the 20V brushless version physically with a few minor differences, including a slightly wider base where the battery goes and the clutch is a little different. Overall a Very impressive drill and power, definitely recommend getting this drill especially if you are already on the flexvolt battery platform. It is nice to be able to use your 20V batteries for smaller projects but when you need more power you can also use flexvolts and get a boost.
Tons of power. My fist use for this was mixing paint and is handled the chore easily. I also blasted a bunch of 1" holes through steel with a hole saw. I like the three speed gear box because it has so much power it will spin way too fast for some jobs (like paint mixing and using a hole saw) without choosing a slower speed. Yes, it has a variable speed trigger, but I noticed that the trigger can be a little difficult to modulate - on high speed, it can suddenly jump from slow to almost full speed with very little change in pressure on the trigger. The only negative is that if is a little on the heavy side, especially with the flexvolt batteries, but that was expected. It feels like a quality tool and performs great.
I purchased this drill for rebuilding a fence and finishing out our new patio. It had zero problems with mixing small batches of quikrete, drilling and driving through treated lumber, and putting pilot holes in cured concrete. It has since been used for metal fab on two project cars and several small projects. While I have a smaller DCD791 for normal use, I break out this monster when I absolutely need to put holes in tougher materials. It never fails to do the job.Make sure that you use quality bits with this drill. It will destroy the cheap stuff in seconds.
I have the 18V european model (bought from Zivtool), but I'm not very impressed in this toll's quality and futures.The metal chuck is not centered, it is offset, it has a gap of 1mm in one side and 2mm in the opposite side, measured to the grey metal round case edge.If I use a 2 inch long fine drill bit, it's tip will not puncture as a dot, but drawaing a little circle with a 2mm radius. Imagine how hard will be to point it with a longer bit.I also noticed this issue to my last dcd800 that I returned after 7 days, but not as worst as this dcd999.I don't like the noisy "clank" sound when starts and stops (brake).Last thing, I don't like that I can't shut off the light (like dcd800, for example).First time I fasten the chuck, it got stucked, but manged to ... MoreI have the 18V european model (bought from Zivtool), but I'm not very impressed in this toll's quality and futures.The metal chuck is not centered, it is offset, it has a gap of 1mm in one side and 2mm in the opposite side, measured to the grey metal round case edge.If I use a 2 inch long fine drill bit, it's tip will not puncture as a dot, but drawaing a little circle with a 2mm radius. Imagine how hard will be to point it with a longer bit.I also noticed this issue to my last dcd800 that I returned after 7 days, but not as worst as this dcd999.I don't like the noisy "clank" sound when starts and stops (brake).Last thing, I don't like that I can't shut off the light (like dcd800, for example).First time I fasten the chuck, it got stucked, but manged to release it after a few tricks. Hope it will not happen again, as I've seen a lot of youtubers highlithing Dewalt's metal chuck problems.In my opinion, a lot of issues for such a "big" brand.Still, it's a powerful and heavy tool.I'll call the warranty guys to see if they can fix it.If not, I'll sell it, toghether with all my new Dewalt tools and chose another brand.
I have a smaller Dewalt drill already and have been very happy with it but I needed to drill some anchors in Concrete. This drill has the hammer feature I needed for this job and I am not disappointed. The drilling power and hammer impact make short work of the anchors. The Side handle gets a firm grip on the tool and allows much better control and support. I cannot stop without mentioning the chuck on this tool, talking about grip! The keyless chuck gets a hold of a bit and hangs on to it without slipping. I have also used this too to drill 7/16 holes through hardened steel with a cobalt drill bit to refloor a flatbed trailer. I am leaning pretty good on the top of the drill and it just cuts faster without bogging down. Adding in the clutch settings allowed me to ... MoreI have a smaller Dewalt drill already and have been very happy with it but I needed to drill some anchors in Concrete. This drill has the hammer feature I needed for this job and I am not disappointed. The drilling power and hammer impact make short work of the anchors. The Side handle gets a firm grip on the tool and allows much better control and support. I cannot stop without mentioning the chuck on this tool, talking about grip! The keyless chuck gets a hold of a bit and hangs on to it without slipping. I have also used this too to drill 7/16 holes through hardened steel with a cobalt drill bit to refloor a flatbed trailer. I am leaning pretty good on the top of the drill and it just cuts faster without bogging down. Adding in the clutch settings allowed me to use the tool to drive self drilling screws without stripping them.Strong motor, excellent Hammer power, the Best Keyless chuck I have used, clutch settings, variable speed, reversible, not heavy, great side handle, I am super happy with this tool.
Excellent Drill, I am giving my old 18 volt cordless to my son.I now own the old format 18 volt (with a stem) the newest 20/60 volt system cordless drill. I can say this new Brush less Cordless Hammer drill outperforms my old cordless drill and my old 1/2" corded drill.It took on a 6x6 treated deck posts with ease, I had to hold on to the extra long side handle to keep it from torquing out of my hand.I really like that extra long side handle too, the extra leverage was needed as I was drilling that 6x6.I have a 5 amp/20 volt battery and the 6 amp/60 volt battery. That 60 volt got a bit heavy towards the end of the day, but it hung in there longer that I did I was finished but it wasn't.I am glad they have made this new battery format standard for all their ... MoreExcellent Drill, I am giving my old 18 volt cordless to my son.I now own the old format 18 volt (with a stem) the newest 20/60 volt system cordless drill. I can say this new Brush less Cordless Hammer drill outperforms my old cordless drill and my old 1/2" corded drill.It took on a 6x6 treated deck posts with ease, I had to hold on to the extra long side handle to keep it from torquing out of my hand.I really like that extra long side handle too, the extra leverage was needed as I was drilling that 6x6.I have a 5 amp/20 volt battery and the 6 amp/60 volt battery. That 60 volt got a bit heavy towards the end of the day, but it hung in there longer that I did I was finished but it wasn't.I am glad they have made this new battery format standard for all their current and looks like future products.I have had several Dewalt cordless drills through the years, they have all been great drills but buy the time I needed a new battery the format for the battery had changed and it was cheaper to buy a new drill and the new format for the battery than just the old style battery (if you could find one).I am glad they have made this new format standard for all their current and looks like future products.
And it’s worth every penny. I’m a full time commercial and residential plumber, and I’ve put this thing through the wringer. It almost made me regret buying the 60v joist drill (DCD471), but that’s an entirely different animal. I know it’s got its limits, I just haven’t found it yet. It eats whatever I put in front of it and wants more. I’ve had every iteration of the 20v hand drills minus the atomic, and it’s definitely a step up from the XR. I mix concrete with it, drill holes from 1/8” to 4 1/2” in solid lumber, through steel, shred 4” PVC pipe out of fittings, dunked it in some questionable fluids a few times, and buried it in a hole. Still smokes holes like it’s Ron Jeremy, just better looking. Couldn’t be happier with it.
| Tool Type | Cordless Hammer Drill/Driver, Hammer Drill |
| Power Type | Cordless |
| Power Voltage | 20V |
| Amperage | 5 A |
| Chuck Size | 1/2 in. |
