
DEWALT DCF961BDEWALT 20V MAX DCF961B Impact Wrench
Ranked #2 with a Best Score of 66.
- Max breakaway torque
- 1900 ft-lb
- Weight
- 8.75 lb
- Battery energy
- —
The best impact wrench for heavy automotive and construction work needs high breakaway torque to free stuck fasteners and high fastening torque to tighten them. Battery energy decides how long you work per charge. Weight decides how long you can hold the tool. Drive size, speed settings, and a work light matter too. We put 64 impact wrenches on one spec sheet so you can compare torque, battery, weight, and warranty side by side, using only the listed data.
Quick answer
Ranked from 64 impact wrenches that met our standard, compared on max breakaway torque, max fastening torque, battery energy.
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Ranked #2 with a Best Score of 66.


At 6.4 lb it keeps the 1400 ft-lb breakaway torque of the 11 lb kit.
| Spec | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Best Scoreout of 100 | 67 | 65 | 64 | 63 | 63 | 62 | 61 | 60 | 59 | 58 |
| Max fastening torqueft-lb | 1320 ft-lb | 1350 ft-lb (best in row) | 1030 ft-lb | 1030 ft-lb | 1350 ft-lb (best in row) | 1032 ft-lb | 1000 ft-lb | — | 959 ft-lb | — |
| Max breakaway torqueft-lb | 1900 ft-lb (best in row) | 1800 ft-lb | 1400 ft-lb | 1400 ft-lb | 1700 ft-lb | 1180 ft-lb | 1000 ft-lb | 900 ft-lb | — | 1328 ft-lb |
| Impact rateIPM | — | — | — | — | — | 2200 IPM (best in row) | 1500 IPM | — | — | — |
| Drive size | 1/2 in | 1/2 in | 1/2 in | 1/2 in | 1/2 in | 1/2 in | 1/2 in | 1/2 in | 1/2 in | 1/2 in |
| Battery energyWh | — | — | — | 100 Wh | — | 84 Wh | — | — | 168 Wh (best in row) | — |
| Battery included | No | No | No | Yes (best in row) | No | Yes (best in row) | — | Yes (best in row) | Yes (best in row) | No |
| Weightlb | 8.75 lb | — | 6.40 lb | 11.00 lb | — | 8.50 lb | 5.95 lb | 2.98 lb (best in row) | 11.00 lb | — |
| Brushless motor | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Speed settings | 1–3 | 3–3 | 1–4 | 1–4 | 0–1,850 | 1–3 | 0–3,000 (best in row) | — | 0–2,400 | 1,500–2,200 |
| LED work light | Yes | Yes | Yes | Yes | Yes | Yes | — | Yes | Yes | Yes |
| Warrantyyr | — | — | — | 3 years | — | — | — | — | — | — |
We reviewed 103 impact wrenches and kept only the 64 that pass every check below. Those are ranked by a Best Score built from spec fit for this job, warranty, sales rank.
These reviews are based on specifications and listing information, not hands-on use. Each one covers what the numbers mean for heavy automotive and construction work.
Highest breakaway torque on the page, battery not included
Its max fastening torque is 1320 ft-lb. Breakaway torque is the force needed to loosen a stuck fastener, so this number points to large pipe flanges and seized wheel lugs.
It weighs 8.75 lb and uses a 1/2 in drive. That is lighter than the 11 lb DCF900P1 kit, though this one is a bare tool. The data lists no battery as included, and no battery energy figure, so plan to buy a pack and charger. The brushless motor, 3 speed settings, and LED work light round out the sheet.
The listing describes a precision wrench mode meant to help prevent overtightening and fastener run-off. The maker's claim of the highest rated max torque for a cordless 1/2 in wrench is its own wording, not something we verified. No warranty term is listed in the data, so check that before you buy.
VerdictPick it when stuck fasteners are the main job and you already own compatible batteries.
Same torque as the DCF900P1 at 6.4 lb
The DEWALT DCF900B is the bare-tool version of the DCF900P1. It shares the 1030 ft-lb max fastening torque, 1400 ft-lb max breakaway torque, 1/2 in drive, brushless motor, and 4 speed modes. The difference is in the box and on the scale. Those matching numbers make this a simple comparison.
Weight is the main draw. For all-day work on a truck or in a wheel well, that gap is large. The data lists no battery as included, so a pack will add to the weight you carry. Battery energy and warranty are not listed, and the listing mentions battery guard, a shock-absorbing connection.
The listing names construction, automotive, and farming uses, including wheel lugs and concrete anchor bolt setting. A variable speed trigger and LED work light come with it. The maker does not publish an impact rate in this data. Buy it if you already own 20V batteries and want the same torque in a lighter tool, and skip it if you need a kit with a battery.
VerdictIt offers the same torque as the top-ranked kit in a much lighter tool, if you already have batteries.
Balanced torque, battery, and warranty, but heavy
The DEWALT DCF900P1 ranks first on our Best Score at 71. It lists 1030 ft-lb of max fastening torque and 1400 ft-lb of max breakaway torque on a 1/2 in drive. Breakaway torque is the number that matters for frozen lug nuts and rusted bolts. At 1400 ft-lb, this tool has plenty in reserve for heavy automotive jobs and most construction fastening.
Runtime comes from the kit. The data lists a 100 Wh battery as included, so you can start work without buying a pack first. The brushless motor is built for efficiency under load. Four speed modes and a variable trigger let you back off the power on smaller fasteners, which helps prevent overtightening. An LED light covers dark wheel wells and engine bays, and the listing mentions battery guard, a shock-absorbing battery connection.
The tradeoff is weight. At 11 lb, it ties for the heaviest tool among the models that list weight. That adds up over a full day overhead or under a vehicle, so check it against your own grip strength. The 3 year warranty is the longest on the page, matched by one other model, and few products list any warranty term.
VerdictIt is the best all-around pick on the page because it balances torque, battery, and warranty, though its weight is the cost.
A complete kit with a two-handed grip option
It lists 1032 ft-lb of max fastening torque and 1180 ft-lb of max breakaway torque. That is close to the DEWALT DCF900 pair on fastening, but lower on breakaway. On a 1/2 in drive, that suits lug nuts and suspension bolts.
The kit includes batteries, and the data lists 84 Wh of battery energy. The listing describes two 4.0Ah packs and a charger. Two packs let you swap one in while the other charges, which keeps a long job moving. At 8.5 lb, it is lighter than the 11 lb DEWALT kit. It has a brushless motor, 3 speed settings, and an LED work light.
The listing highlights a detachable D-handle for a two-handed grip, plus a belt hook. A second hand helps control a tool at high torque and may reduce arm fatigue, as the listing says. No warranty term is listed in the data. Pick it if you want a complete kit with batteries and extra grip, and skip it if loosening force above 1180 ft-lb is your priority.
VerdictIt is a well-equipped kit that gives up some breakaway torque to the DEWALT models above.
Compact and light, with modest torque figures
The Milwaukee 2967-20 ranks fifth on our Best Score at 61. It lists 1000 ft-lb for both max fastening torque and max breakaway torque on a 1/2 in drive. Equal numbers mean it offers no extra loosening force beyond its tightening rating, unlike the DEWALT models above. Its 1500 IPM impact rate is the lowest among the nine models that list it, which is worth weighing.
The strength here is weight. At 5.95 lb, it is lighter than all three DEWALT tools above and the Seesii. The listing calls it compact for tight spaces. It has a brushless motor and an all-metal drive train with a friction ring anvil. The listing describes 4 modes with speeds from 0 to 3,000 RPM. The data lists no LED work light.
The data lists no battery as included, no battery energy, and no warranty term. The listing says it works with M18 batteries and chargers, so it fits owners of that system. Buy it for easy handling in tight spots when you already have the batteries. Skip it if you want the most torque or a kit that arrives ready to run.
VerdictA light tool for M18 owners, but its torque and impact rate trail the leaders.
Best among the reviewed tools
Breakaway torque is the force to loosen a stuck fastener, and rusted lug nuts need it most. Among the 14 products that list it, values run from 664 ft-lb to 1900 ft-lb. For heavy work, look at this number before fastening torque.
Max fastening torque shows how hard the tool can tighten. Most tools here use a 1/2 in drive, which fits sockets for wheel lugs and common automotive bolts. Fastening torque on the page runs from 320 ft-lb to 1475 ft-lb among 27 listed products.
Battery energy in Wh tells you how much charge a pack holds, so more means longer runtime. Listed values range from 80 Wh to 168 Wh. Also check whether a battery is included, since bare tools need packs bought separately.
Weight ranges from 2.98 lb to 11 lb among the 22 products that list it. A heavy tool tires your arm over a full day, especially overhead or under a vehicle. Compare weight with torque so you do not trade away power you need.
On our Best Score, the DEWALT DCF900P1 ranks first at 71. It lists 1030 ft-lb of fastening torque, 1400 ft-lb of breakaway torque, a 100 Wh battery, and a 3 year warranty. It weighs 11 lb, which is a tradeoff.
Its max fastening torque is 1320 ft-lb. The data lists it without a battery, so you would need to supply one.
Among the 22 products that list weight, tools range from 2.98 lb to 11 lb. The JESIMAIK Z1320 is the lightest at 2.98 lb, while the DEWALT DCF900P1 and MODOFO KF1T020US are the heaviest at 11 lb.
Generally yes, since battery energy in Wh measures stored charge. Listed values run from 80 Wh to 168 Wh, with the Protmex PR1500NM and MODOFO KF1T020US at 168 Wh. Actual runtime also depends on the work, and these makers do not publish runtime tests here.
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