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Internet # 333178304

Model # 2531-20-48-11-2450S

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M12 FUEL 12-Volt Lithium-Ion Brushless Cordless Orbital Detail Sander with M12 XC High Output 5 Ah Battery (2-Pack)

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  • 2X faster material removal with the POWERSTATE™ Brushless Motor
  • REDLINK PLUS™ Intelligence ensures maximum performance
  • XC5.0 Battery delivers 25% more power and runs 25% cooler
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Product Details

About This Product

Designed for the professional carpenter, remodeler, or general contractor; the MILWAUKEE M12 FUEL Orbital Detail Sander is optimized for precision and designed to complement larger sanders on the jobsite. The M12 FUEL Orbital Detail Sander delivers faster detail sanding, stain grade finish, and more access in corners and contours. MILWAUKEE POWERSTATE Brushless Motor and MILWAUKEE REDLINK PLUS intelligence provides the power to remove material up to 2X Faster than traditional hand sanding solutions on the market. The detail sander features an orbital sanding motion with a 1.5mm orbit diameter to deliver a clean, consistent stain-grade surface finish. The unique pad shape provides sharp, straight edges for greater accuracy and access into confined corners. The lightweight and ergonomic design at 1.3lbs provides unmatched maneuverability. The innovative counterweight mechanism minimizes vibration to reduce user fatigue. This detailing sander features a variable speed trigger with a lock-on button and four speed settings from 14K - 4K for increased control across a wide variety of materials. The optional sponge pad allows the abrasive to contour to the work surface when working with complex trim profiles, while the pad saver protects against excessive heat buildup to extend the life of the backing pad. The battery-powered detail sander features an integrated LED light, battery fuel gauge, and carries Milwaukee Tool's industry-leading 5-year limited power tool warranty.

Highlights

  • POWERSTATE Brushless Motor: Generates the power to deliver 14K max OPM under load for faster material removal.
  • REDLINK PLUS Intelligence: Ensures maximum performance and protects from overloads, heating, and over-discharge.
  • Orbital sanding motion with 1.5mm orbit diameter delivers a scratch-free stain grade surface finish.
  • Compatible with the full lineup of new Milwaukee POWERGRID Mesh Sanding Sheets.
  • Lightweight, ergonomic design at 1.3lbs and low vibration minimizes user fatigue.
  • Variable speed trigger with lock on button provides unmatched control across four speed settings.
  • The LED light illuminates the work surface to provide maximum visibility on the jobsite.
  • Pad saver protects against excessive heat buildup to extend the life of the backing pad material.
  • Sponge pad allows the abrasive to contour to the work surface when working with complex trim profiles,
  • Fits all M12 battery packs.
  • Includes: (1) M12 fuel orbital detail sander (2531-20), (3) 80 grit abrasive, (3) 120 grit abrasive, (3) 180 grit abrasive, hex wrench, sponge pad, pad saver
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 333178304

Model # 2531-20-48-11-2450S

Additional Resources

Shop All Milwaukee

Specifications

Dimensions: H 4.5 in, W 1.99 in, D 8.9 in

Dimensions

Product Depth (in.)

8.9 in

Product Height (in.)

4.5 in

Product Width (in.)

1.99 in

Details

Batteries Included

No

Battery Amp Hours

No Battery

Battery Power Type

Lithium Ion

Battery Size

12-volt

Battery Voltage (V)

12V

Charger Included

Charger Not Included

Color Family

Red

Cordless Tool Type

Detail Sander

Cordless/Corded

Cordless

Detail Sanders Type

Mouse Sander

Included

Battery Included

Motor Type

Brushless

Number of Total Batteries Included

2

Power Tool Features

LED Light, Lock On Switch, Variable Speed

Product Weight (lb.)

1.67 lb

Returnable

90-Day

Speed (rpm)

14000

Tools Product Type

Power Tool

Warranty / Certifications

Manufacturer Warranty

5 Year Limited

Questions & Answers

What size paper does this take?
ByJun 5, 2026
1 Answer | 
Answer This Question

Hey Mike. The M12 FUEL™ Orbital Detail Sander uses 3‑3/4" hook‑and‑loop detail sanding sheets designed specifically for its triangular pad. Milwaukee’s POWERGRID™ mesh sanding sheets are made to match this pad size and shape.

By|Jun 10, 2026


    The width of the pad is not 1.99 inches, it's 2 and 5/8 inches. This screwed me up because I had a space that needed sanding that was 2 inches.
    ByOct 1, 2025
    0 Answer | 
    Answer This Question

    Is there a polishing pad for the M12 FUEL 12-Volt Lithium-Ion Brushless Cordless Orbital Detail Sander?
    ByFeb 23, 2025
    1 Answer | 
    Answer This Question

    Hey Bobo! Yes, there is a polishing pad available for the M12 FUEL 12-Volt Lithium-Ion Brushless Cordless Orbital Detail Sander. The relevant accessory is the Sponge Interface Pad (SKU: 48-80-5402), which is designed to contour to curved surfaces and prevent over-sanding of high points. This pad is ideal for sanding contours and profiles and is compatible with Milwaukee Mesh Sanding Sheets.

    By|Feb 25, 2025


      Trying to decide between this and the oscillating tool. Main upcoming project for use is prepping house trim for repainting. Any thoughts on preference?
      ByFeb 18, 2025
      1 Answer | 
      Answer This Question

      Hey there! We recommend if you have a lot of prep work to do go with the M12 Detail Sander and if not too much go with the M12 Multi Tool!

      By|Feb 19, 2025


        Is there an advantage to this sander over the 12v multi tool with the sanding attachment?
        ByDec 29, 2024
        2 Answers | 
        Answer This Question

        Yes noise level and the way it sands

        By|May 28, 2025

          This is orbital action. The multitool is reciprocal.

          By|May 21, 2026


            Recently purchased, the sander is always overheating when using a high output battery (tried 2.5 and 5aH batteries), but seems to work ok with the standard XC batteries, is this normal?
            ByAug 3, 2024
            1 Answer | 
            Answer This Question

            Hi Nathan! For assistance with your sander, please call our team at 1-800-SAWDUST with more information! -Milwaukee Tool Social Team

            By|Aug 6, 2024


              Is there a round backing plate option as a add-on?
              ByMay 22, 2023
              1 Answer | 
              Answer This Question

              We do not recommend using a backing plate with this product. - Social Team

              By|Jun 7, 2024

                (2)

                Is there any way to attach a 3in round backing plate on this instead of the head that comes with it?
                ByApr 20, 2023
                1 Answer | 
                Answer This Question

                Hello - We recommend utilizing the head that comes with the sander. - Social Team

                By|Apr 20, 2023


                  Viewing 1-8 of 12

                  Customer Reviews

                  4.7 out of 5

                  • 4.7 out of 307 reviews
                  • 95% recommend this product
                  Filter by:
                  Showing 1-10 of 307 reviews
                  This customer chose to rate the product and not provide text.
                  by
                  Excellent tool for detail sanding
                  I've had this sander now for a few years and absolutely love it. Originally I bought a corded SurfPrep sander with all the bells and whistles, and if you know what that is you know how great it is. However, I didn't use it enough to justify the cost and I am already invested in the M12 line so this was a natural choice. I'm a carpenter so I primarily use it for detail sanding on cabinets and trim. But I also use it from time to time sanding drywall mud (pair it with a nice light to pickup inconsistencies...you can thank me later). Makes a good amount of dust without a vacuum hookup so probably should wear a mask. I don't use it all day every day so I consider the battery life to be great. The Milwaukee sanding pads work great as you'd expect them to, but if you're looking for more flexibility in profile sanding consider buying SurfPrep pads...you won't be disappointed. The thicker sponge pad that comes with this is OK but a little stiff and will knock back edges if you're not careful. The interface pad is useful but wore out fairly quickly for me. I like the ability to select the speed but it's variable speed already so I tend to leave it on max. Wish it had a belt hook/clip.
                  by
                    • Recommended
                    This customer chose to rate the product and not provide text.
                    by
                    This is the battery to get for the m12 stubby! You can feel the difference in the performance vs the smaller batteries. I believe these to be better than the 6ah m12 batteries milwaukee sells. Ive been pleased with how long the battery lasts. I wasnt sure about the size being too big compared to the 2.5a HO but it still has a compact foot print when its in the m12 stubby. I recommend the 5ah battery for the m12 stubby impact!
                    by
                    1 found this review helpful
                    I bought these batteries to use for my m12 fuel shop vac. I had been using the 4ah batteries for it, but they would die quickly. I was thinking about switching to the m18 shop vac until I bought these batteries for it. They last substantially longer. I’m very happy with them.
                    by
                    Theses are the best 12v batteries for Milwaukee M12 Fuel tools! They are a must have for when you need maximum power.
                    by
                    Best batteries you can buy for the m12 platform highly recommend especially if you can get a deal for a 2-pack
                    by
                    Big power little battery
                    I bought a pair of these M12 5.0 h.o. Batteries yesterday and they are simply amazing. Most of my platform is M-18 but these batteries make my M-12 just as powerful…. Highly recommended…..
                    by
                      • Recommended
                      The Milwaukee M12 Detail Sander is a fantastic tool for anyone tackling small projects or hard-to-reach areas. I recently used it to smooth out some patches around my exterior door where I had to repair some dry rot, and it performed perfectly. The compact size makes it easy to maneuver, and it has plenty of power for detailed sanding jobs without feeling overbearing. If you often find yourself working in tight spaces or touching up repair work, this sander is a real time-saver. Highly recommended.
                      by
                      These batteries have made a big difference on the power of the tools I have used them with. The life of the batteries have been surprisingly good so far. They have been an obvious upgrade from my XC 4 amp hour batteries. I can’t wait to try them on the m12 1/2 stubby impact.
                      by
                      Showing 1-10 of 307 reviews