Does it come with a battery?

No. It is sold as a bare tool, so you need a Milwaukee M18 battery and charger, or an existing M18 kit.

What is ONE-KEY used for?

ONE-KEY lets you set custom drive modes and speeds from a phone and track the tool. Basic driving works without the app.

How much torque does it have?

Up to 2,000 in-lbs, with 0–3,900 RPM and 0–4,400 IPM.

It has a 1/4-in. hex chuck, so standard 1/4-in. hex impact bits fit.

Is it worth it over a compact driver?

If you drive large fasteners or want app control, the extra torque and ONE-KEY justify it. For light assembly, a compact driver is handier.

Milwaukee M18 FUEL 1/4-in. Hex Impact Driver with ONE-KEY, Tool Only (2957-20)

Q: Where is the Milwaukee M18 FUEL 1/4-in. Hex Impact Driver with ONE-KEY, Tool Only (2957-20) cheapest?

At Amazon, for $119.00, 52% under what the other stores charge, as of our latest check.

Q: What do buyers say about the Milwaukee M18 FUEL 1/4-in. Hex Impact Driver with ONE-KEY, Tool Only (2957-20)?

Rated 4.3 out of 5 from 3 ratings.

Q: Where can I buy the Milwaukee M18 FUEL 1/4-in. Hex Impact Driver with ONE-KEY, Tool Only (2957-20)?

17 stores we checked sell it, including Amazon, Sherrilltree, TreeStuff, Acme Tools, Tool Nut.

Best price now

$119.00at AmazonChecked 1 h ago

52% under what the other stores charge

Compared across 16 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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What reviewers say

Owners of the M18 FUEL impact driver line praise the torque and speed for driving long screws and lag bolts, and many like the ONE-KEY customization. Complaints center on the bare-tool packaging and on the app being needed to unlock the tool's extra modes.

What people mention

TorquePraisedOwners say it drives long screws and lag bolts without bogging down.
SpeedPraisedReviewers note quick drive times on repetitive fastening.
ONE-KEYMixedSome like the app modes and tracking; others find the app setup a hassle.
Bare toolCriticisedBuyers point out that batteries and a charger are not included.
SizeMixedIt is bigger and heavier than compact impact drivers, which some mind.

About the Milwaukee M18 FUEL 1/4-in. Hex Impact Driver with ONE-KEY, Tool Only (2957-20)

The Milwaukee M18 FUEL 1/4 in. Hex Impact Driver with ONE-KEY (2957-20) is a cordless impact driver for driving screws, lags and self-tapping fasteners. It is sold as a bare tool, without a battery or charger. It runs on the Milwaukee M18 battery platform and works with all M18 batteries and chargers.

It has a POWERSTATE brushless motor that delivers up to 2,000 in-lbs of torque. No-load speed is 0 to 3,900 RPM, and impact rate is up to 4,400 IPM. Ultimate Trigger Control smooths acceleration at low trigger pull, so small fasteners start more cleanly. 4-Mode Drive Control lets the user match output to the work. A self-tapping screw mode shuts the tool down once the fastener seats.

The compact body is 4.49 inches long and weighs 2.3 lbs without a battery. The 1/4 in. hex quick-change chuck allows fast bit changes and single-handed bit insertion. Tri-LED lighting lights the area around the bit tip. ONE-KEY lets users customize, track and manage the tool, and save up to four task settings on it.

Model

2957-20

Type

Cordless 1/4 in. hex impact driver, tool only

Motor

POWERSTATE brushless

Torque

Up to 2,000 in-lbs

Speed

0 to 3,900 RPM (no load)

Impact rate

Up to 4,400 IPM