Milwaukee 2457-20 M12 Cordless 3/8″ Ratchet

Key Features

Fastener PowerThe Milwaukee 2457-20 M12 Cordless 3/8″ Lithium-Ion Ratchet puts out up to 35 ft-lbs of torque, which is enough to speed up teardown and reassembly work without dragging around an air hose. Controlled SpeedA variable-speed trigger and up to 225 RPM help you run fasteners down quickly while keeping better control when working around smaller hardware and tight clearances. Tight-Space FriendlyThe low-profile head, built-in LED light, and compact M12 form factor make this cordless ratchet a practical pick for engine bays, maintenance work, and other cramped spots.

Overview

The Milwaukee 2457-20 M12 Cordless 3/8″ Lithium-Ion Ratchet is a cordless power ratchet built for mechanics, maintenance techs, and repair work where a hand ratchet is too slow and an air ratchet is overkill. This is a cordless ratchet designed for automotive and maintenance fastening. Model Number: 2457-20. If you already run Milwaukee M12 batteries and want faster bolt run-down in tight spaces, this is the tool that fills that gap.

What matters most here is the balance of speed and usable torque. Milwaukee rates this tool at up to 35 ft-lbs of torque with a 0-225 RPM speed range. In plain terms, that means it is built to speed up repetitive fastening and unfastening work on covers, brackets, clamps, and general service hardware. It is not a replacement for a high-torque impact wrench, but it is a huge step up from spinning fasteners by hand all day.

The design is aimed squarely at close-quarters access. The 3/8 inch anvil with ball detent works with standard 3/8 inch drive sockets, and the low-profile head helps the tool fit where a bulkier cordless ratchet or drill would fight for space. That makes a real difference in engine bays, under dashboards, around machinery guards, and anywhere you have limited swing room.

Milwaukee also built this ratchet like a shop tool, not a light-duty gadget. The reinforced steel housing and variable-speed metal trigger are there for a reason. In day-to-day use, those details matter because this kind of tool gets set down on concrete, bumped against frames, and used in awkward positions where control matters as much as raw output.

For jobsite practicality, Milwaukee includes a built-in LED light and an on-board fuel gauge. The LED helps when you are working under a hood or in a dim mechanical room, and the fuel gauge gives you a quick battery check before you crawl back into a tight spot. Milwaukee also calls out REDLINK Intelligence for system communication and overload protection, which helps the tool and battery work together more consistently under load.

This is a bare tool, so it is meant for users already on the Milwaukee M12 battery platform or anyone building into that system. It runs on M12 REDLITHIUM batteries, with battery and charger sold separately. That makes sense for techs and contractors who already own M12 packs and want to add a dedicated cordless ratchet without paying for duplicate batteries.

Who should buy it? If you do automotive repair, fleet maintenance, equipment service, HVAC work, or general mechanical assembly, this Milwaukee ratchet makes repetitive fastening faster and less tiring. If your work regularly involves breaking loose heavily rusted or overtorqued hardware, pair this with a breaker bar or impact wrench and use the ratchet for what it does best: saving time once the fastener is ready to move.

Compact Access for Mechanical Work

This cordless ratchet is built around one job: getting into places where a standard ratchet is slow and a larger cordless tool will not fit cleanly. The slim body, low-profile head, and one-handed trigger control are what make it useful in real service work.

• 3/8 inch ball detent anvil works with standard 3/8 inch drive sockets
• Low-profile head design helps in engine bays and other close-clearance areas
• Built-in LED light improves visibility in darker work zones

What’s in the Box

• (1) Milwaukee M12 3/8″ Ratchet (2457-20)

Battery and charger sold separately.

Key Specifications

Battery Platform	M12
Motor Type	Brushed
Drive Size	3/8 in
Anvil Type	Ball Detent
Maximum Torque	35 ft-lbs
No-Load Speed	0-225 RPM
Weight Excluding Battery	1.9 lb
Voltage	12 V

Compatibility

Battery PlatformCompatible with Milwaukee M12 battery packs. This bare tool does not include a battery or charger. Socket InterfaceUses a 3/8 inch anvil with ball detent for standard 3/8 inch drive sockets.

Built For

Automotive Fleet Maintenance Mechanical Repair Equipment Service HVAC General Maintenance

Warranty & Support

5 Year Limited Warranty.

Tool Nut’s Take

Tool Nut’s Take

Milwaukee 2457-20 M12 Cordless 3/8″ Lithium-Ion Ratchet Gets the Everyday Mechanical Stuff Done Faster

This is the kind of tool that earns its keep by saving your wrist and cutting down the time spent spinning the same fasteners over and over.

• Who it’s for: Mechanics, service techs, and maintenance pros who already use 3/8 inch sockets and want a compact cordless ratchet for tighter spaces.
• Why it stands out: The mix of 35 ft-lbs of torque, compact access, LED lighting, and M12 platform compatibility makes it a very practical shop and service tool.
• Worth knowing: This is a bare tool and it is best used to speed up fastening work, not as a substitute for breaking loose seriously stuck hardware.

Common Questions

• What battery system does this ratchet use? It is part of the Milwaukee M12 platform and runs on M12 battery packs.
• Does it use standard sockets? Yes. It has a 3/8 inch ball detent anvil for standard 3/8 inch drive sockets.
• Is this a bare tool? Yes. The 2457-20 includes the ratchet only. Battery and charger are sold separately.
• What kind of motor does it use? This model uses a brushed motor.