DEWALT XTREME 12V MAX Brushless 3/8-in Hammer Drill (Tool Only) review

Research-based assessment · DEWALT US product page and DCD701/DCD706 Type 10 manual checked 28 October 2026

The DCD706B is a cordless drill/driver with a documented hammer-drilling mode, sold here as a tool-only package. This review compares manufacturer specifications and instructions; it is not based on ownership, hands-on use, testing or independent measurements.

What the DCD706B package actually includes

DEWALT lists the drill and a belt clip in the DCD706B “Includes” section and says the battery and charger are sold separately. No case or bag is listed for this suffix. That makes the B package most straightforward for someone who already has compatible DEWALT 12V MAX batteries and a suitable charger. A DEWALT 20V MAX pack is a different system; do not infer compatibility from the shared brand name. The manual's battery and charger tables, rather than a marketplace title, are the right place to verify system fit.

DEWALT describes 12V MAX as a maximum initial battery voltage measured without a workload, with a 10.8V nominal rating. That label explains the maker's system naming, not a performance comparison with a different voltage platform. The exact kit alternative observed in the same US catalogue is DCD706F2, which the manufacturer lists with two DCB122 packs, a charger, belt clip and bag. Those kit contents do not come with this DCD706B tool-only SKU.

A small chuck and three distinct modes

The product page identifies a 3/8-inch ratcheting chuck, two transmission speeds and 15 clutch positions. The 3/8-inch figure is the chuck's maximum bit-shank capacity; it is not a promise that the drill can bore a 3/8-inch hole in every material. The manual describes the lower gear as the higher-torque setting and the upper gear as the lower-torque setting, and says to let the tool stop completely before shifting. For screwdriving, the numbered collar provides a torque range; start conservatively and adjust on scrap or an inconspicuous spot rather than treating a number as a universal fastener recipe.

The DCD706 has a hammer position in addition to ordinary drilling and screwdriving. The model-specific mode table marks hammer drilling “DCD706 only”; that matters because a similarly compact drill/driver without this mode is not an equivalent masonry choice. For hammer work, the manual calls for carbide-tipped or masonry bits rated for percussion. It also says to secure the workpiece and hold the tool firmly in anticipation of reaction. In drill and hammer positions the clutch does not engage; an overload can stall the tool and produce a sudden twist. The manual advises using enough, not excessive, pressure and keeping the bit straight.

There is one useful boundary in the shared DCD701/DCD706 manual: its maximum-recommended-capacity table lists metal drilling at 1/4 inch in low range and 1/8 inch in high range; flat boring in wood at 3/4 inch and 1/2 inch; and hole saws at 3/4 inch and 5/8 inch. These are DEWALT's instructions for the manual family, not independent test results. The table does not give a masonry-hole capacity, so it cannot settle a concrete or brick job. A 3/8-inch chuck also remains a bit-shank limit, not a general hole-size rating.

Published size and output claims need context

DEWALT states a 6.6-inch front-to-back dimension and a 2.3-pound tool-only weight. Both are manufacturer figures, and the weight expressly excludes the battery. The page does not establish a complete working envelope with a pack, bit, hand and approach angle. Measure the actual space you need to reach rather than treating the 6.6-inch body dimension as guaranteed clearance.

The same overview states 250 UWO and “25,500 rpm.” The UWO value is a maker-published output claim, not an independent result. The larger speed wording is not carried into this assessment: the manual's specifications list the DCD706's no-load ranges as 0–425 and 0–1,500 rpm, and the product-page wording does not explain whether 25,500 refers to another rate or is a unit error. I will not relabel it as blows per minute or use it as a rotational-speed fact.

Where it sits beside DEWALT alternatives

In the observed DEWALT US catalogue, DCD794B is a 20V MAX, half-inch drill/driver whose manual-listed modes do not include hammer drilling; DCD799 is a half-inch 20V MAX hammer-drill family. DCD706B instead belongs to the 12V MAX system and has the smaller 3/8-inch chuck plus hammer mode. Those are functional and platform differences, not package suffixes to blur together. If your existing batteries are 20V MAX or your bit shanks exceed 3/8 inch, this exact configuration may be the wrong fit even though its mode label says hammer drill. If you need larger or sustained masonry work, check the task-specific capacities in the relevant tool and bit instructions; the general product description is not a material-by-material rating.

Who should consider the bare tool—and who should pass

The DCD706B is most plausible for a buyer who wants the compact 12V drill's documented drilling, screwdriving and hammer-drilling options, already has compatible batteries and a charger, and has confirmed that the planned bits fit its chuck. It is less attractive if you are starting without that battery system, need an included pack, expect a case, want a 1/2-inch shank capacity or require a masonry-hole rating that this manual does not state. In those cases, compare the exact kit contents or another machine's documented limits before choosing.

No battery runtime, charging time, drilling rate, balance, durability, noise or real-world masonry capability has been measured here. DEWALT's US safety-notice index captured on the review date did not show a DCD706 entry; an index check is not a safety certification and should be repeated before a later release. Confirm the exact DCD706B suffix, included items and manual before buying.