Milwaukee 2457-21P M12 Cordless Ratchet Kit 3/8 Inch
- Torque: 420 in-lb
- Head Style: Box End
- Voltage: 12 volts
- Item Weight: 4.13 pounds
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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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ASIN: B07MN6M8JRModel: 2457-21PCategory: Impact Drivers & Wrenches
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.
Pros and cons
- 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 |
|---|---|
| Model | 2457-21P |
| Dimensions & fit | |
| Item Weight | 4.13 poundshigher than 62% of 184 impact drivers & wrenches |
| Product Dimensions | 13.5 × 9.1 × 4.1 inches |
| Power & efficiency | |
| Voltage | 12 voltslower than 76% of 171 impact drivers & wrenches |
| Battery Cell Type | Lithium Ion |
| Construction & materials | |
| Finish | Polished |
| Included components | |
| Batteries Included | Yes |
| Item Package Quantity | 1 |
| Other details | |
| Torque | 420 in-lblower than 89% of 75 impact drivers & wrenches |
| Head Style | Box End |
| Batteries Required | No |
| Batteries | 1 12V batteries required. (included) |
| Measurement System | inch |
| Style | Reliable |
Closest rivals on specs
LUXTER LX-RWS-12LI 12V Cordless Ratchet Wrench Set 3/8 in- Item Weight 4.13 vs 3.31 pounds (+25%)
Frequently asked questions
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.