Milwaukee 2457-21 M12 Cordless Ratchet Kit with Bag
- Torque: 420 in-lb
- Maximum Torque: 420 in-lb
- Power Source: Corded Electric
- Maximum Rotational Speed: 250 rpm
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact 12 volt impact tool at just over 4 pounds, built for confined-space fastening rather than heavy-duty torque work.
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ASIN: B07HSX1TTKModel: 2457-21Category: Impact Drivers & Wrenches
Overview
The Milwaukee 2457-21 is a 12 volt cordless impact tool weighing 4.06 pounds, built around a 1.5 amp motor. Its compact size and battery platform target technicians working in tight spaces where a full-size impact wrench will not fit.
Milwaukee positions this model in its impact category, and the 12 volt platform points to the brand's compact cordless line built for one-handed use in confined areas such as under dashboards or inside cabinets. The listed 250 RPM figure reflects a controlled, lower-speed setting rather than a high-speed spec, which fits precision fastening work over raw output.
- 12 volt cordless power source
- 1.5 amp rated motor
- 250 RPM listed speed
- 4.06 pound tool weight
Who it's for
Suits technicians and installers who need a compact impact tool for confined spaces, such as automotive or cabinet work. Less suited to anyone needing high-torque output for large fasteners, where a full-size 18 volt or 20 volt impact wrench would fit better.
Pros and cons
- Compact 12 volt platform fits tight spaces
- Light 4.06 pound body for one-handed use
- Milwaukee build quality on a known model
- Lower RPM limits speed on bulk fastening
- Not suited to high-torque large fasteners
Performance notes
The 1.5 amp motor and 12 volt platform keep the tool compact at 4.06 pounds, favoring maneuverability over raw power. The listed 250 RPM speed suggests a controlled operating range suited to precise fastening rather than fast bulk driving.
Specifications
| Brand | MILWAUKEE |
|---|---|
| Model | 2457-21 |
| Dimensions & fit | |
| Maximum Chuck Size | 0.38 Inches |
| Item Weight | 4.06 poundshigher than 61% of 184 impact drivers & wrenches |
| Item Dimensions L X W X H | 14.5 × 3.5 × 10.5 inches |
| Capacity & performance | |
| Maximum Rotational Speed | 250 rpmlower than 93% of 71 impact drivers & wrenches |
| Speed | 250 RPM |
| Drilling Capacity Wood | 0.4 inches |
| Drilling Capacity Metal | 0.4 inches |
| Power & efficiency | |
| Power Source | Corded Electric |
| Voltage | 12 voltslower than 76% of 171 impact drivers & wrenches |
| Amperage | 1.5 amps |
| Battery Type | Lithium-Ion |
| Construction & materials | |
| Material Type | Metal,Steel |
| Color | Black, Red |
| Compatibility & installation | |
| Compatible Devices | Milwaukee M12 Devices |
| Included components | |
| Unit Count | 1 |
| Included Components | Battery |
| Warranty & support | |
| Manufacturer Warranty Description | 5 Year Limited Warranty |
| Other details | |
| Torque | 420 in-lblower than 89% of 75 impact drivers & wrenches |
| Maximum Torque | 420 in-lblower than 94% of 68 impact drivers & wrenches |
| Drill Type | Basic Drill |
| Is Electric | Yes |
| Additional Features | Compact, Variable Speed |
Closest rivals on specs
LUXTER LX-RWS-12LI 12V Cordless Ratchet Wrench Set 3/8 in- Item Weight 4.06 vs 3.31 pounds (+23%)
Frequently asked questions
What voltage system does the Milwaukee 2457-21 use?
It runs on a 12 volt cordless platform.
How much does the Milwaukee 2457-21 weigh?
It weighs 4.06 pounds.
Is the Milwaukee 2457-21 suited to large fasteners?
Its compact 12 volt platform and 1.5 amp motor are built for confined-space work rather than high-torque jobs on large bolts.