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Simon tools

Simon Tools Magnetic Bit Holder for Milwaukee M12 Fuel Surge Impact Driver and Drill - Holds 6 Bits

  • Based on 1,116 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Aug 29
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Size: Fits Model No 34xx (Gen3) ONLY!


Color: Red Right Side


Features

  • Designed for M12 Gen3: Fits the Milwaukee M12 Fuel Gen3 impact driver (3453-20) and drill (3404-20). If you have the Gen2 or M12 Surge, check our other variation. Not compatible with the M12 Subcompact.
  • Secure Magnetic Hold: N52-grade neodymium magnets lock each bit in place with a satisfying snap, so you get none of the dropped bits and fumbling that come with friction-based holders.
  • Built to Last: Like your Milwaukee drill, this bit holder is injection molded out of a durable plastic, making it at least as tough as the tool it rides on. Holds up to 6 bits without getting in your grip.
  • Extra Functionality: Free yourself from juggling screws in your mouth, pockets, or tool belt mid-job by storing them on the rubberized magnetic side. Now with 30% larger magnets for an even stronger hold!
  • No-Fuss Installation: Mounts with the included upgraded screw, no adhesives needed. Pre-applied threadlock keeps it locked in place. A practical gift for any Milwaukee M12 owner, contractor, or serious DIYer.
  • Buy with Confidence: Backed by a 1-Year Warranty for added peace of mind. If an issue arises, we're ready to help.

Description

Secure your drill bit holder on the impact driver or drill in no time. Installation screw with threadlock included. Forget about losing your Milwaukee bits, and focus on the project at hand. Effortlessly snaps in place, no friction to wrestle. The magnetic side keep your next screw primed and ready to use. Oct 2022 – Initial Launch: First 3D printed production version. May 2023 – Injection Molding: Improved strength and production scalability. Aug 2023 – Black Option Added: Introduced after customer requests. Jul 2024 – Magnet Retention Update: Tighter magnet pocket to prevent loosening. Sep 2024 – Left-Side Version: Dedicated left configuration added. Dec 2024 – Larger Side-Magnets: Improved screw holding strength. Apr 2025 – Deeper Magnet Pocket: Increased retention and durability. May 2025 – Material Update (PP-EPDM): Enhanced impact resistance. Jun 2025 – Hardened Screw: Reduced risk of breakage. 2026 and Beyond: Evaluate feedback and identify improvements.

Brand: Simon tools


Material: Hardened screw with threadlocker, Injection molded PP plastic, N52 Neodymium magnets


Number of Pieces: 1


Number of Items: 1


Unit Count: 1 Count


Brand Name: Simon tools


Model Number: ST-M12-Gen3


Number of Items: 1


Unit Count: 1 Count


Number of Packs: 1


Manufacturer: Sivertsen Creations


Included Components: Bit holder, installation screw


Manufacturer Part Number: ST-M12-Gen3


Drive Bit Shank Style: Low profile fit


Bit Compatibilities: drill, impact driver


Number of Pieces: 1


Material Type: Hardened screw with threadlocker, Injection molded PP plastic, N52 Neodymium magnets


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 29

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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Top Amazon Reviews

    • If you’re using M12 tools, this is a must-have accessory.
Size: Fits Model No 25xx (Gen2) ONLY! Color: Black Left Side
This magnetic bit holder has quickly become one of my go-to accessories for my Milwaukee M12 tools. The magnet is strong enough to hold bits securely during heavy-duty tasks, but not so strong that swapping bits is a hassle. It feels durable and well-made, with a solid metal construction that stands up to frequent use. Using it has made my work much faster — no more dropped or lost screws, and the holder keeps everything right where I need it. It’s compact, easy to handle, and fits perfectly with the M12 drivers. ... show more
Reviewed in the United States on October 5, 2025 by Ryan
    • Works great
Size: Fits Model No 34xx (Gen3) ONLY! Color: Black Right Side
Review Image by joseph bice
I like it. It dose make the drill a bit wider but the magnets are good so it doesn't drop the bits at all and its handy to just be able to grab the drill and go
Reviewed in the United States on July 15, 2026 by joseph bice
    • Better Than the Milwaukee Option
Size: Fits Model No 25xx (Gen2) ONLY! Color: Red Right Side
Perfect fit and great retention. It offers better versatility than the OEM version from Milwaukee. I recommend this to anyone who wants increased utility at a reasonable price.
Reviewed in the United States on July 26, 2026 by 24bics
    • Great product
Absolutely love this bit holder. The magnets are very strong and I have never had any issues with the bits falling out. After a year of daily use the screw that holds it on the impact has come loose afew times but it’s not a big problem. Overall this is a great purchase, especially for electricians.
Reviewed in the United States on July 22, 2026 by Mack
    • Sort Of Fits Brushless M12
Size: Fits Model No 34xx (Gen3) ONLY! Color: Red Right Side
Review Image by Russell S
Review Image by Russell S
Review Image by Russell S
This does technically fit the brushless M12 3450-20, but it's not a nice fit. I assume its shape must sit tight against an M12 Fuel, but this is the compact, base, brushless driver and there is a pretty big gap along the side. I'm concerned that I'll accidentally catch something in that gap and rip off the bit holder and break the housing on the driver. I'm torn if I keep it or not because of that. The actually holding of bits and the magnet outer face is nice. If this fit snugly against the housing, this is a no brainer. So I assume that if you have a Fuel, then you'll love this thing. ... show more
Reviewed in the United States on May 4, 2026 by Russell S
    • Perfect fit
Size: Fits Model No 34xx (Gen3) ONLY! Color: Black Right Side
Works as advertised, very handy
Reviewed in the United States on July 10, 2026 by Aaron
    • Upgrade your drill!
Size: Fits Model No 25xx (Gen2) ONLY! Color: Red Right Side
Review Image by steve fuller
Review Image by steve fuller
Review Image by steve fuller
Review Image by steve fuller
I definitely consider this an upgrade to my impact as well as my hammer drill. I’ve got a combo of this unit on one side then the magnetic bit holder (also from Simon tools) on the other side. Super useful combination, six bits should cover most things I encounter on the one side, then screws and drill bits on the other side (see pic). The plastic construction on the unit is pretty tough with a rubberized magnetic section (magnet is little weak). The rubber magnetic patch will hold a number of loose screws as well. The magnets in the slots are very strong, no worries about tips coming out. I really love not having to grab a box of tips when I need my drill for something. I keep a couple of adapters, Phillips, and a torx bit in there.. maybe a slotted. It’s become one of those tools you can’t imagine not having. Just an extension of the drill. I read where someone wrote that the drill becomes top heavy. I haven’t had that issue myself and I thought I would. The drills having remained fairly balanced. Full disclosure I am using the larger bottom batteries, 3.0 and higher I believe.. that helps balance the drill. I’m a new fan of Simon Tools! ... show more
Reviewed in the United States on February 13, 2025 by steve fuller
    • Magnets should be stronger
Size: Fits Model No 34xx (Gen3) ONLY! Color: Red Right Side
I love everything except the magnet strength. Stronger magenta should really have been used. Screws aren't held very securely, especially if there are multiple 2 or 3 inch screws.
Reviewed in the United States on April 10, 2026 by Drake

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