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Milwaukee

Milwaukee 2457-21 3/8-in Cordless M12 Lithium-Ion Ratchet Kit

  • Based on 1,449 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Oct 3
Order within 19 hours and 6 minutes
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Features

  • Powerful 12-volt motor: Delivers up to 35 ft-lbs of torque.
  • The kit includes one M12 battery, a 30-minute charger, and carrying case.
  • On-board fuel gauge: Helps you monitor the charge precisely for less downtime on the job.
  • Built-in LED light: Illuminates work surfaces in dark locations.
  • Superior fastening speed: Produces 250 RPM, with variable-speed trigger for greater control.
  • Reinforced metal housing and trigger for longer tool life
  • cluded charger and M12 REDLITHIUM battery offer high run time and long battery life for excellent value

Description

Choose the sub-compact ratchet with best-in-class power, speed and durability. The M12™ Cordless 3/8” Lithium-Ion Ratchet is the ideal tool for auto mechanics, maintenance and repair professionals looking for maximum performance and productivity in a subcompact cordless tool. It utilizes a powerful 12-volt motor to produce up to 35 ft-lbs of torque and 250 RPM, giving users the power and speed of a pneumatic ratchet without the airhose. It’s powered by the M12 REDLITHIUM™ Battery Pack (sold separately), which delivers more work per charge and more work over pack life than the competitors, as well as best-in-class performance in extreme jobsite conditions. At just 10-3/4” long and 1.9 lbs, the ratchet is tool-belt portable, and features a 3/4" low-profile head design for work in the tightest of spaces and engine bays. The variable-speed metal trigger and reinforced steel housing provide maximum control and durability with any application.

Brand: Milwaukee


Voltage: 12 volts


Battery Cell Composition: Lithium Ion


Number of Batteries: 1 Lithium Ion batteries required. (included)


Included Components: 30-Minute Charger, Adapter, Carrying case, M12 Red Lithium Battery, Ratchet


Voltage: 12 volts


Battery Type: Lithium Ion


Number of Batteries: 1 Lithium Ion batteries required. (included)


Maximum Rotational Speed: 250 rpm


Power Source: Cordless


Unit Count: 1 Count


Brand Name: Milwaukee


Included Components: 30-Minute Charger, Adapter, Carrying case, M12 Red Lithium Battery, Ratchet


Model Number: 2457-21


Global Trade Identification Number: 84


Set Name: 2457-21


UPC: 045242257584 689528796611


Item Length: 10.1 inches


Item Type Name: Milwaukee 2457-21 Cordless Ratchet Kit


Manufacturer: MILWAUKEE ELECTRIC TOOL


Manufacturer Part Number: 2457-21


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Works Great. Huge time saver.
Size: 3/8"
Short review: Works great. Huge time saver. Long review: Great tool as are most Milwaukee power tools I have owned. This tool isn't going to do anything you can't already do with a normal ratchet or even a power drill with a 3/8 inch socket adapter, but man it is such a time saver. It is just handy to have this dedicated socket power tool. I thought I would just use this for working on cars, tractors, or other machinery. However, it is so handy, I have it in my general handyman tool tote with a small socket set. It saves so much time on all kinds of little projects. I just used it the other day to disassemble a bed frame that uses about 6 inch lag screws. It turned a 10-15 minute job into a 5 minute job. Zips those screws or nuts right out or off. Battery life seems good. It has a light on it that I do find handy sometimes. It is like a two stage trigger. Pull it a little and the light turns on without the tool running. Pull the trigger further and the tool runs. The tool seems to have good torque. It isn't going to break rusty or really tight bolts. It isn't an impact wrench. However, the tool is built to allow the user to use it like a ratchet to break loose the nut or tighten it at the end. I have found that it works fine for most nut/bolts I encounter, but obviously you have to get a regular ratchet to break the nuts loose sometimes. It seems plenty durable for the DIYer or farmer or similar use. I can't attest to how it would hold up in a professional setting. I also, can't say how it compares to an air ratchet as I have never owned one. I use this tool for DIY home use/handyman use/farm work/DIY mechanic work. It has held up well so far. The one negative is the price of Milwaukee power tools. They are good tools, but I think you probably pay extra for the brand name. Other cheaper brands usually work just fine. However, I try to stick to one or two brands so I don't have a bunch of different batteries and chargers. Bottom line is I find it handy and a durable tool for a DIY type of person. Not sure how it would hold up to every day professional use. ... show more
Reviewed in the United States on May 3, 2019 by Joel Kemp
    • Great M12 Ratchet – Works Well and Good Value for the Price
Size: 3/8"
I bought this Milwaukee M12 3/8” ratchet mainly for working in tighter spaces, and overall I’m really happy with it. The tool works exactly as expected and has plenty of power for its size. It makes jobs much faster compared to using a regular ratchet, especially when you’re working on vehicles or in spots where a bigger tool won’t fit. The ratchet, battery, and instruction manual all arrived and everything worked perfectly right out of the bag. The tool feels solid like you would expect from Milwaukee, and for the price I think it’s a really good value if you’re looking for a compact cordless ratchet. One small thing I noticed is that the ratchet didn’t come in the retail box and was inside the bag when it arrived. Also, the bag itself is a bit lighter than I expected and not exactly like the one shown in the photos. It seems more like a simple dust bag to keep the tool clean rather than a heavy-duty bag for carrying a lot of tools. For me that’s not a big deal since I mainly wanted the ratchet itself. Overall, the tool performs great and does its job well. If you’re mainly buying it for the ratchet and battery, it’s an excellent tool for the money. If the bag is something that matters a lot to you, just keep that in mind, but the tool itself is definitely worth it. ... show more
Reviewed in the United States on March 15, 2026 by Glorimar
    • Milwaukee makes good stuff
Size: 3/8"
Excellent product for the price
Reviewed in the United States on August 4, 2026 by Logan Kennedy
    • Great Electric Ratchet, Don't waste your money on a cheaper Knockoff
Size: 3/8"
Purchased this M12 ratchet a couple of weeks ago, and used it for the first time last weekend, and I love it! I've been an Auto technician for 40 years and have always been oldschool, using pneumatic air tools for everything, but no longer, after using my brother's crappie Harbor Freight electric ratchet, I was on the fence about buying one because of the size and weight of the H.F. version of this tool, but I've known for years that you get what you pay for when it comes to buying automotive related tools! Not only is the M12 ratchet smaller and lighter than the competition, it's lower torque and faster rpm speed is actually an advantage, at 35 ft-lb max torque,( v.s. H.F.'S 65 ft-lb model) you're saved from the annoying knucklebuster cuts on your hands, but More importantly, you'll have less chance of snapping bolts while loosening or tightening, and no one enjoys either, Spins bolts out fast, loosed most of the ones I've encountered underhand so far, and best of all its quiet with no dirty air hose to drag around to scratch the paint work on your shiny ride. It comes with one lithium ion battery, a charger and a decent case that has velcro and elastic straps to keep your stuff secure, should you decide to transport the kit or accidentally pick it up while it's unzipped, the charger is high tech, and fast, even came with a bonus 3/8"to 1/4" reducer, and knockoff batteries ran and charged well in both, the only thing else I could add here is, this vendor appears to have the best price point as well, and I Internet surfed for Days looking for the best deals on this Kit, hopefully I helped your decision making process, thanks for hanging in there this far, Kurt ... show more
Reviewed in the United States on May 8, 2019 by Kurt Y.
    • I should have gotten one years ago.
Size: 3/8"
After almost 50 years of turning a ratchet, I finally stepped up. Charges quickly, not too heavy, and reasonable torque. Perfect for the under chassis covers on a Mercedes that have 6 screws each.
Reviewed in the United States on April 14, 2026 by Doug
    • Handy and durable...
Size: 3/8"
I have been a long time fan of Milwaukee products, particularly their drills and impact drivers. I have M18 tools for my work and keep M12 tools around my house. I'm a carpenter by trade, but have been working on lots of equipment and vehicles as of late and saw good reviews of this ratchet, so I purchased it. There are three things I believe would improve this ratchet and kit: 1.) Every other battery-powered Milwaukee "kit" I've purchased (probably around eight or so) have included two batteries whereas this kit only comes with one. Because of my past experiences buying Milwaukee tools, I didn't even think to look if two batteries were included. My assumption was wrong, but in fairness, upon further investigation, the product description for this tool does say only one battery is included. Nonetheless, this is disappointing to me and is purely a cost-saving measure. 2.) The tool comes in a soft-sided case. This is a matter of personal preference, but I've never been a fan of soft-sided cases. It's been my experience soft cases they eventually rip and fall apart while offering little to no retention or impact protection to their contents. Soft-sided cases are yet another method to reduce product costs and I'd much prefer a durable, molded plastic case for storage and transport. 3.) The ratchet dial (to change turning direction) is in the traditional location on the back-side of the head of the ratchet. The lever itself doesn't offer much grip surface for my fat fingers and is stiff and difficult to turn. Additionally, if you have the ratchet in tight quarters, you have to finagle the ratchet back out to change the directions, whereas a thumb switch on the body of the tool would be much easier and more accessible. Other than these three items, I do like this product. ... show more
Reviewed in the United States on April 26, 2018 by Oasky
    • Milwaukee tools, top quality and performance!
Size: 3/8"
Milwaukee tools are awesome and this set is no exception. The price was good and the tools performed perfectly.
Reviewed in the United States on July 19, 2026 by Gregg Cressman
    • Great price
Size: 3/8"
Great deal. I highly recommend
Reviewed in the United States on August 3, 2026 by Daniel Hartsgrove

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