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Deal.ai › DeWalt
DeWalt
DEWALT DCF921B 20V MAX ATOMIC Brushless 1/2 in. Impact Wrench Tool Only

DEWALT DCF921B 20V MAX ATOMIC Brushless 1/2 in. Impact Wrench Tool Only

4.5(55 ratings)

Best price now

$75.99at eBayChecked 8 h ago

68% under what the other stores charge

Compared across 17 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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Price facts

  • Lowest price today: $75.99 at eBay (checked Nov 14, 2026).
  • Checked at 17 stores.

Our take on the DEWALT DCF921B 20V MAX ATOMIC Brushless 1/2 in. Impact Wrench Tool Only

The DeWalt DCF921B is a compact 20V MAX cordless impact wrench with a 1/2 in. drive and a brushless motor. It is built for automotive and maintenance work where a full-size wrench will not fit, and its variable-speed trigger lets you ease into fasteners instead of hammering them at full power. It is sold as a bare tool, so you need a 20V MAX battery and charger you already own. Against full-size high-torque wrenches it gives up peak breakaway force but wins on size and weight; owners rate it highly for lug nuts and light engine work.

Best forDIY and home mechanics working on carsTight engine bay and suspension jobsTrades who already own 20V MAX batteriesLight construction and assembly fastening
Pros
  • Compact body reaches tight spaces
  • Brushless motor for runtime and life
  • 1/2 in. drive handles common lug and bolt sizes
  • Variable-speed trigger gives control on small fasteners
  • Bare tool keeps it light and simple
Cons
  • No battery or charger included
  • Less torque than DeWalt's full-size high-torque models
  • 1/2 in. anvil is overkill for small fasteners
  • No friction ring or detent pin choice at this model

DEWALT DCF921B 20V MAX ATOMIC Brushless 1/2 in. Impact Wrench Tool Only prices at every store

  • eBayNew

    In stock

    $75.99Free shippingChecked 8 h ago
    Visit eBay
  • Value Tools CoNew

    In stockReturn policy

    $145.00Checked 8 h ago
    Visit Value Tools Co
  • Home DepotNew

    In stock

    $239.00Free shippingChecked 8 h ago
    Visit Home Depot
  • Stones Ace ofNew

    In stock

    $239.00Checked 8 h ago
    Visit Stones Ace of
  • Tool NutNew

    In stock

    $239.00Free shippingChecked 8 h ago
    Visit Tool Nut
  • BigRNew

    In stock

    $239.99+ $8.45 shippingChecked 8 h ago
    Visit BigR
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $164.99Free shippingChecked 8 h ago
    Visit Amazon
  • WalmartNew

    Availability unknownSold by WB TOOLS

    $189.00Checked 8 h ago
    Visit Walmart
  • ArborNew

    Availability unknown

    $210.24Checked 8 h ago
    Visit Arbor
  • Max ToolNew

    Availability unknown

    $239.00Checked 8 h ago
    Visit Max Tool
  • RunningsNew

    Availability unknown

    $239.00Checked 8 h ago
    Visit Runnings
  • Ohio Power ToolNew

    Availability unknown

    $239.00Checked 8 h ago
    Visit Ohio Power Tool
  • Do it BestNew

    Availability unknown

    $239.99Checked 8 h ago
    Visit Do it Best
  • Coastal Farm & RanchNew

    Availability unknown

    $239.99Checked 8 h ago
    Visit Coastal Farm & Ranch
  • SupplyHouse.comNew

    Availability unknown

    $294.78Checked 8 h ago
    Visit SupplyHouse.com
  • Grainger Industrial SupplyNew

    Availability unknown

    $311.78Checked 8 h ago
    Visit Grainger Industrial Supply
  • ImperialSupplies.comNew

    Availability unknown

    $311.78Checked 8 h ago
    Visit ImperialSupplies.com

Also available at

  • Coastal ToolCheck price at Coastal Tool

Store links may earn us a commission.

DEWALT DCF921B 20V MAX ATOMIC Brushless 1/2 in. Impact Wrench Tool Only price history

Lowest price we've seen: $75.99 on Nov 14 at eBay. Tracked across 16 stores since Nov 14.

What reviewers say

  • 4.5 / 555 ratings

Owners rate it 4.5 out of 5 and mostly praise the size-to-power balance, calling it a strong compact wrench for lug nuts and engine work. Complaints center on it being a bare tool and on torque limits versus bigger wrenches.

What people mention
  • SizePraisedOwners say the compact head gets into engine bays and wheel wells a full-size wrench cannot reach.
  • PowerMixedReviewers find it strong for its size on lug nuts but say it struggles with heavily rusted or high-torque bolts.
  • BatteryCriticisedBuyers note it arrives as a bare tool, so the cost of a 20V MAX battery and charger adds to ownership.
  • Trigger controlPraisedThe variable-speed trigger is described as easy to feather for smaller fasteners.
  • BuildPraisedOwners report the brushless motor and housing hold up well to regular shop use.

About the DEWALT DCF921B 20V MAX ATOMIC Brushless 1/2 in. Impact Wrench Tool Only

The DEWALT DCF921B ATOMIC is a cordless impact wrench with a 1/2 in. drive. It runs on the 20V MAX battery system and is sold as a tool only, so the battery and charger are not included.

It has a brushless motor, which the store says improves efficiency, durability and runtime. Variable speed control lets the user adjust the tool for the task. The compact ATOMIC body is designed for tight spaces.

It is used for fastening, automotive repair, construction and maintenance work. Use appropriate sockets and safety equipment during operation.

Brand
DEWALT
Model
DCF921B (1006299577)
Voltage
20V MAX
Drive size
1/2 in.
Motor
Brushless
Speed control
Variable speed
Power source
Lithium-ion battery
Dimensions
3.40" x 9.30" x 5.80"
Included
Tool only; battery and charger not included

Specifications

color
Multicolor
size
3.40" x 9.30" x 5.80"

Questions and answers

Does it come with a battery?
No. It is a tool-only kit, so you need a DeWalt 20V MAX battery and charger, which are sold separately.
Will it remove lug nuts?
Yes, for most passenger-car lug nuts it has enough torque, especially with a fully charged pack. Very tight or rusted nuts may need a breaker bar first.
How does it compare with DeWalt's high-torque wrench?
It is smaller and lighter but delivers less peak torque. Choose this for tight spaces and general work; choose the high-torque model for heavy truck and rusted fasteners.
What drive size does it use?
It has a 1/2 in. square drive, the common size for impact sockets on automotive work.
Is it good for engine work?
Yes. The compact body and variable-speed trigger suit engine bay and suspension fasteners where a larger wrench will not fit.
Where is the DEWALT DCF921B 20V MAX ATOMIC Brushless 1/2 in. Impact Wrench Tool Only cheapest?
At eBay, for $75.99, 68% under what the other stores charge, as of our latest check.
What do buyers say about the DEWALT DCF921B 20V MAX ATOMIC Brushless 1/2 in. Impact Wrench Tool Only?
Rated 4.5 out of 5 from 55 ratings.
Where can I buy the DEWALT DCF921B 20V MAX ATOMIC Brushless 1/2 in. Impact Wrench Tool Only?
18 stores we checked sell it, including Value Tools Co, Amazon, eBay, Walmart, Arbor.

Stores we've priced the DEWALT DCF921B 20V MAX ATOMIC Brushless 1/2 in. Impact Wrench Tool Only at

  • Ace Hardware deals and prices
  • Arbor deals and prices
  • Coastal Farm & Ranch deals and prices
  • Grainger Industrial Supply deals and prices
  • Ohio Power Tool deals and prices
  • Runnings deals and prices
  • The Home Depot deals and prices
  • Tool Nut deals and prices
  • Walmart deals and prices
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