Milwaukee 2457-21p M12 Cordless 3/8" Lithium-ion Ratchet Kit
- Impact
- Yes
- 4.13 pounds
- 12 volts
The 2457-21p earns its place in a toolbox already stocked with M12 batteries, trading pneumatic torque for reach into tight engine bays.
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How it ranks among the 284 impacts we track
4.5★ across 160 Amazon ratings, Bayesian-smoothed toward the category average.
160 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
200+ bought on Amazon 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
Milwaukee's M12 platform powers the 2457-21p, a 12 volt cordless 3/8 inch ratchet kit weighing 4.13 pounds as a set. Aimed at mechanics and technicians who need ratchet access in tight spaces without a hose or cord.
Being part of the M12 line means it shares batteries and chargers with other Milwaukee M12 tools, a real convenience for anyone already invested in that battery system. The kit designation typically bundles the ratchet with a battery, charger and case rather than selling the tool bare.
- M12 12 volt platform
- 3/8 inch drive
- Lithium-ion battery included
- 4.13 pounds
Who it's for
Automotive and equipment technicians already running M12 tools, or anyone wanting a compact cordless ratchet for tight engine bay work, get the value here. Without other M12 batteries, a bare tool would cost less.
Strengths and trade-offs
Drawn from this product's published specifications.
- Compact 3/8 inch cordless ratchet
- Shares batteries with the M12 tool line
- Light at 4.13 pounds for tight-space work
- M12 platform has less torque than larger tools
Performance notes
The 12 volt M12 battery platform keeps the ratchet compact and light at 4.13 pounds, trading some torque for maneuverability in tight spaces like engine bays. Lithium-ion cells give it quicker recharge and steadier output through a charge than older battery chemistries.
Specifications
| Brand | MILWAUKEE |
|---|---|
| Battery | Yes |
| Item Weight | 4.13 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 2457-21p M12 Cordless 3/8" Lithium-ion Ratchet KitThis product | 4.5 / 5 | 160 | 4.0 / 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 impacts
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What drive size does the Milwaukee 2457-21p ratchet use?
3/8 inch.
What battery platform does the 2457-21p run on?
Milwaukee's M12 12 volt lithium-ion platform.
Does the 2457-21p kit include a battery?
Yes, it is sold as a kit with battery included.