DEWALT DCF911B 20V Max 1/2 in Impact Wrench
- 250 foot pounds of torque
- 20 volts, 5 amps
- 0.5 inch maximum chuck size
- 2.6 pounds, 5.87 inches long
- Belt clip included
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact cordless impact wrench with high torque and a belt clip, listed without a battery. The speed figure in the listing looks like an error.
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ASIN: B09HVXKJF6Model: DCF911BCategory: Impact Drivers & Wrenches
Overview
Not a bit-driving impact driver despite the category, this is an impact wrench for sockets and large fasteners. The body is metal, the length is short, and a belt clip hangs it from a belt.
The reason to buy is the torque in a short, light body for tight engine bays and equipment. The limitation is that the box holds only the wrench and clip, so a battery must come separately.
Who it's for
A mechanic already using a DEWALT battery platform who wants a short wrench for lug and engine bolts. A user driving wood screws is better served by an impact driver.
Pros and cons
- Short body fits tight spots
- Light for the output
- Belt clip included
- Battery not included
- Listed speed looks wrong
- Charger absent from contents
Performance notes
An internal hammer mechanism converts motor rotation into rapid torque bursts that break stubborn bolts loose. Real output depends on the battery used, and the short body trades reach for access.
Specifications
| Brand | DeWALT |
|---|---|
| Model | DCF911B |
| Dimensions & fit | |
| Maximum Chuck Size | 0.5 inches |
| Item Length | 5.87 incheslower than 81% of 111 impact drivers & wrenches |
| Item weight | 2.6 pounds |
| Capacity & performance | |
| Maximum Rotational Speed | 2.25 RPMlower than 100% of 36 impact drivers & wrenches |
| Power & efficiency | |
| Power Source | Battery powered |
| Voltage | 20 voltshigher than 54% of 135 impact drivers & wrenches |
| Amperage | 5 amps |
| Construction & materials | |
| Material Type | Metal |
| Color | Multi |
| Included components | |
| Included Components | Impact wrench, belt clip |
| Other details | |
| Maximum Torque | 250 foot pounds |
| Drill Type | Impact driver |
Closest rivals on specs
Seesii WH450 3/8 in Cordless Impact Wrench- Item Length 5.87 vs 5.1 inches (+15%)
Milwaukee 2658-20 M18 Impact Wrench 3/8 Inch- Voltage 20 vs 18 volts (+11%)
Frequently asked questions
Does the DEWALT DCF911B come with a battery?
No. The listing names the impact wrench and a belt clip only.
Is the DEWALT DCF911B an impact driver or a wrench?
The item type says impact wrench, though the category and drill type say impact driver.
How fast is the DEWALT DCF911B?
The listing shows 2.25 RPM, which looks like an error, so no usable speed figure is given.