Milwaukee 2456-20 Impact
- Impact
- 1.55 pounds
- 12 volts
- Better rated than 62%
- More reviewed than 82%
A compact 12 volt impact wrench for the M12 platform, worth buying only if you already own M12 batteries since this ships as a bare tool.
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How it ranks among the 284 impacts we track
4.7★ across 1,400 Amazon ratings, Bayesian-smoothed toward the category average.
1,400 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 284 impacts we track - how the scorecard works · full impacts data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Milwaukee 2456-20 is a 12 volt cordless impact wrench weighing 1.55 pounds, sold as a bare tool without battery or charger. It runs on Milwaukee's M12 cordless system for compact fastening work.
The -20 suffix in Milwaukee's naming marks this as a bare tool, so a compatible M12 battery and charger are needed separately, which most buyers already own if they are invested in the M12 platform. At 1.55 pounds it is built for one-handed use in tight spots rather than heavy fastening.
- 12 volt M12 platform
- 1.55 pound tool weight
- Bare tool, battery sold separately
- Compact body for tight-space fastening
Who it's for
Fits Milwaukee M12 owners who need a compact impact wrench for automotive or light fastening tasks. Not a fit for first-time buyers without existing M12 batteries.
Strengths and trade-offs
Drawn from this product's published specifications.
- Compact 1.55 pound body for tight spots
- Runs on the wide Milwaukee M12 battery line
- 12 volt platform keeps weight low
- Sold bare, no battery or charger included
- 12 volt output limits it to lighter fastening work
Performance notes
At 1.55 pounds and 12 volts, this impact wrench trades raw torque for maneuverability, suited to fasteners in tight engine bays or under dashboards rather than lug nuts on a truck. Because it ships bare, actual runtime depends entirely on the battery paired with it.
Specifications
| Brand | MILWAUKEE |
|---|---|
| Model | 2456-20 |
| Item Weight | 1.55 pounds |
| Voltage | 12 volts |
Other MILWAUKEE impacts
How it compares
This product against the closest alternatives we track in impacts.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Milwaukee 2456-20 ImpactThis product | 4.7 / 5 | 1,400 | 3.8 / 5 |
| DEWALT DCF845B ImpactDeWALT | 4.7 / 5 | 12,700 | 4.5 / 5 |
| GEARWRENCH 81270 ImpactGEARWRENCH | 4.7 / 5 | 4,983 | 4.4 / 5 |
| AOBEN AB7331T ImpactAOBEN | 4.4 / 5 | 10,707 | 4.4 / 5 |
| Ryobi P235A ImpactRyobi | 4.7 / 5 | 4,700 | 4.4 / 5 |
Similar impacts from other brands
Questions about the MILWAUKEE 2456-20
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Milwaukee 2456-20 include a battery?
No, the -20 designation means it ships as a bare tool without a battery or charger.
What battery platform does it use?
Milwaukee's 12 volt M12 system.
How much does the tool weigh?
1.55 pounds.