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Deal.ai › Milwaukee
Milwaukee
Milwaukee M12 FUEL 12V Lithium-Ion Brushless Cordless 1/4" Hex Impact Driver

Milwaukee M12 FUEL 12V Lithium-Ion Brushless Cordless 1/4" Hex Impact Driver

Best price now

$92.90at Mass DepotChecked Nov 8

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Price facts

  • Last seen at $92.90 at Mass Depot on Nov 8.

Our take on the Milwaukee M12 FUEL 12V Lithium-Ion Brushless Cordless 1/4" Hex Impact Driver

The Milwaukee 3450-20 is a sub-compact 12V impact driver built for tight spaces and overhead work. Its POWERSTATE brushless motor delivers 1,500 in-lbs of torque and up to 3,300 RPM from a body just 5.1 inches long and 2.9 lbs bare. That torque figure beats many older 18V drivers, while the small size beats most 12V rivals. It suits tradespeople and DIYers who want one-hand control in cabinets, ceilings and engine bays. The trade-off is a 12V platform: batteries are sold separately, and runtime per charge is shorter than an 18V tool under heavy fastening.

Best forElectricians and installers working overheadCabinet, furniture and finish work in tight spotsPros already on the M12 battery platformOne-hand fastening where weight matters
Pros
  • Very short 5.1-inch head fits between studs and inside cabinets
  • Light 2.9 lbs bare reduces fatigue on overhead work
  • 1,500 in-lbs torque rivals many full-size 18V drivers
  • Brushless motor and 3,300 RPM top speed for fast driving
  • Four-mode drive control with a self-tapping screw mode
  • Shares the M12 battery platform with other Milwaukee tools
Cons
  • Batteries and charger sold separately
  • Shorter runtime per charge than 18V drivers under heavy use
  • 1/4-inch hex only; no square drive or bit holder in the box
  • Not a replacement for a high-torque 18V impact wrench on lugs

Milwaukee M12 FUEL 12V Lithium-Ion Brushless Cordless 1/4" Hex Impact Driver prices at every store

  • Mass DepotNew

    In stockReturn policy

    $92.90Checked Nov 8
    Visit Mass Depot

What reviewers say

Owners rate the 3450-20 highly for its size-to-power ratio, calling it one of the best sub-compact impact drivers available. Most praise the light weight and control in tight spaces; the main complaints are battery cost and runtime on demanding jobs.

What people mention
  • SizePraisedOwners say the short head reaches places full-size drivers cannot.
  • TorquePraisedReviewers report it drives long screws and lags that 12V tools usually struggle with.
  • WeightPraisedUsers note low fatigue during overhead and all-day work.
  • BatteryMixedThe M12 platform is convenient for existing owners, but batteries are sold separately and runtime is limited under heavy load.
  • BuildPraisedThe brushless motor and Milwaukee's tool build are described as durable in daily trade use.

About the Milwaukee M12 FUEL 12V Lithium-Ion Brushless Cordless 1/4" Hex Impact Driver

The Milwaukee M12 FUEL 3450-20 is a 12V brushless cordless impact driver with a 1/4" hex chuck. It measures 5.1 inches long and weighs 2.9 lbs (tool only), which makes it a sub-compact tool for overhead work and tight spaces such as cabinets.

It uses a POWERSTATE brushless motor and runs on REDLITHIUM batteries, which are sold separately. It delivers up to 1,500 in.lbs of torque and up to 3,300 RPM.

Model
3450-20
Voltage
12V
Drive size
1/4" hex
Motor
POWERSTATE brushless
Torque
Up to 1,500 in.lbs
Speed
Up to 3,300 RPM
Length
5.1 in.
Weight
2.9 lbs (tool only)
Battery
REDLITHIUM, sold separately

Questions and answers

Does it come with a battery and charger?
No. The 3450-20 is sold as a bare tool; you need M12 REDLITHIUM batteries and an M12 charger, or a kit version.
How does it compare with an 18V impact driver?
It is shorter and lighter and matches or beats many older 18V drivers on torque, but an 18V tool gives longer runtime and more headroom for heavy driving.
What bits does it take?
It has a 1/4-inch hex quick-change chuck, so standard 1/4-inch hex insert and power bits fit.
Is it good for automotive work?
Yes for interior, trim and small fasteners. For lug nuts and suspension bolts, use a dedicated high-torque impact wrench.
Does it have speed or mode settings?
Yes. It has four drive-control modes, including a self-tapping screw mode that slows the start and stops at a set point.
Who should buy it?
Tradespeople and serious DIYers who already own M12 batteries and need compact, light fastening power in tight spaces.
Where is the Milwaukee M12 FUEL 12V Lithium-Ion Brushless Cordless 1/4" Hex Impact Driver cheapest?
At Mass Depot, for $92.90, as of our latest check.

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