
Milwaukee Tool launched a new 10pc die grinder accessory kit, 49-92-9000, featuring a universal 1/4″ arbor with 2-inch quick-change backer pad and 9 discs.
The accessory set can be used for rapid grinding in metal, stainless steel, paint, wood, and plastic, with Milwaukee saying that it provides professionals with a full solution for surface conditioning applications.

I see this as a convenient starter accessory package. This kit comes with an assortment of discs for surface conditioning, sanding, and paint removal.
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I think it could be a decent starting point for users new to this product category, or anyone who wants a quick variety pack.

The included arbor is described as having a universal 1/4″ shaft with threaded quick-change backer pad.

They say it can be used with die grinders, such as the M12 Fuel right angle model, and also cordless drills.

The set comes with:
- 1/4″ arbor with backer pad (30K RPM max)
- 24 grit sanding disc (2)
- 36 grit sanding disc (2)
- 50 grit sanding disc (2)
- Medium grade surface conditioning disc (1)
- Coarse grade surface conditioning disc (1)
- Paint removal disc (1)
All are 2-inch in size.
The sanding discs feature zirconia alumina abrasives, the surface conditioning discs are non-woven to confirm to surfaces and resist clogging, and the paint removal disc features ceramic corundum abrasive.
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The arbor and discs are compatible with 3M Roloc and Type-R accessories.
I think most users might buy this set to get started, and then order replacement consumables as needed.
Price: $19.99
ETA: Feb 2025
John
Good that they will have their own branded version, but Roloc stuff has been around for years.
Bought the Milwaukee right angle die grinder in 2019. While I use for every metal project since then, it has severe stalling issues with little pressure over extended use. Makes using it a frustrating experience. I have the Bosch, Ryobi, and Walmart Hyper Tough right angle die grinders too. Bosch has been the best for me. Milwaukee needs to improve that tool.
frobo
I have the Bosch and love it. No issues with stalling whatsoever. I use Roloc discs with it and use it all the time.
My only concern about this kit is that the discs range from aggressive to super aggressive, which is ok, but I often find myself using finer grits in the 120-150 range, which aren’t included.
JR Ramos
For how these are typically used in industry, there’s no need or desire for higher grits so it’s hard to find anything above 80g usually. 3″ and 4″ sizes do offer more, if you can run those, but then you have to find a supplier and/or buy expensive boxes of 25 or 50. I have a bunch of 4″ going up to 320g and since I got them for a steal of a song I stocked up on the 120/180/220….used on the Milwaukee M12 drill body polisher with one of the adapters that a fellow in Kansas was machining for awhile but I think he ceased making them.
I’m not positive but I don’t even think the zirconia grains are available above 120g. Al-ox and SiC, being softer and better suited to finer sanding/polishing, go to the higher grits. I haven’t even seen any of the ceramic flavors above 100g I think.
Julian Tracy
That’s ironic, because the Bosch 12v jigsaw was literally useless with any pressure or even trying normal cutting tasks.
MM
Yeah, nothing new here except the Milwaukee branding. Roloc discs and arbors have been around for decades. The abrasives sound like good quality and the price is reasonable. It will be interesting to see if Milwaukee will be offering bulk packaged replacement discs.
I have that same M12 die grinder. It’s not as powerful as a good pneumatic one but it’s usable in my opinion. It would be nice for Milwaukee to upgrade it though, with their new HO batteries it could be made a lot better. I’d also like to see them make a right-angle grinder using a gearbox rather than mounting the motor at an angle as that makes the head a lot more compact. I’m imagining something like the Snap-On CGRR861 but with more grunt.
Stuart
A starter kit makes sense and is convenient. I don’t think they’re interested in launching a full line of accessories for 1 tool.
MM
They sell a variety of sanding discs and pads already, why not add these to the list? Especially because customers will be wanting more once they wear out the ones in the kit? I’d certainly appreciate being able to buy nice quality discs from Milwaukee.
Stuart
Cost vs. reward.
Why only 2″? Why not 1?” Consider their drill bits. Do they have a wire gauge set? Open stuck lettered and numbered drill bits? (No.)
Maybe this is a test. Maybe it’s the answer to “hey Milwaukee, were can I get accessories for my M12 Fuel RA grinder?”
There would be a staggering number of SKUs required for Milwaukee to be competitive against brands like 3M and Norton.
It’s possible, but probably not in their short-term plans.
Matt_T
It looks like a decent mechanics and DIY fabricators starter kit.
I think it might make sense to offer refills for that target market.
Chris
Agree 100 Milwaukee horrible stalling
Andy
When I bought my M12 die grinder, I bought a bunch of these style accessories. I struggled with knowing the right pad / grit selections for my uses, and didn’t want to commit to larger offerings (10+ pads per style) from most suppliers I knew of like the box stores, McMaster, Benchmark Abrasives or Blackhawk Abrasives.
Glad to see Milwaukeee will be offering a starter kit. I’d use it to “sample” different disc types and then order larger quantities of the ones I found most useful.
Stuart
Exactly.
Charles
I like benchmark abrasives and they have great customer service.
JR Ramos
If you have a decent auto paint & body supply in your area, check with them. Most will sell open case discs…usually just 3M though. Grainger and Zoro might also sell singles. I bought a bunch from an outfit called R.S. Hughes and they actually had good prices and fair shipping, so I ended up buying some boxes of my most used…worth a look to see if the pricing is still decent. I think they’re a smaller but multi-location industrial supplier…pretty decent range of brands and products.
MM
Welding shops, MRO shops, and better fastener dealers often sell singles. That’s how I’ve always bought mine.
CMF
I am not sure why there is so much discussion on where and how to get Roloc discs. They have been around for at least 30 years or more. They can easily be found on Amazon or any place catering to automotive work. They exist in 1, 2, and 3 inch for sure possibly more, and can easily be had as singles or sets of 5, 10 or more.
Stuart
If you know what you need, you know what to buy and where to look.
If you’re starting out, there’s a lot of searching and guesswork. I see this set as being convenient for new users and maybe others.
CMF
Noted.
eddiesky
For a starter kit…perhaps a Packout for it too? With spare spaces for other grits? And the tool? Or does the grinder have a packout with storage for the kit?
The Bosch that others like-recommend, is that the GWG12V-20SB?
Ken
I like this. I recently purchased the Bosch GWG12V-20SN. I have never owned a die grinder before and I was a bit surprised (and disappointed) that it did not come with a disc pad or any discs!
Selling a small accessory kit for cheap would help newbies like me get to work without needing to do a bunch or reading on arbors and pads and then finding a place to buy them. I haven’t seen a starter/variety kit for sale from a reputable brand (like 3M) that isn’t hundreds of dollars.
And correct me if I’m wrong, but I think the 2″ disc pad assembly from 3M (model 05539) costs about $33 all by itself. If so, doesn’t that make this kit a really good deal even at full price? I bought the Bosch disc pad assembly (GWG050, $15, made in Ireland of all places) but it did not come with any pads.
I am guessing this Milwaukee kit might be offered as a “free” item with purchase of one of their die grinders when Home Depot has their regular promotions. That’s a great idea IMO.
Andy
I keep my M12 die grinder in a Packout organizer with Kaizen foam to hold the grinder and a battery.
I have the remaining 8 bins filled with 2” and 3” abrasives. The bins are all sub-divided, in most cases into 2 shallower bins, to fit more grit / size options.
The center section got a piece of kaizen foam to hold the different mandrels and carbide burrs I have, plus the two wrenches for the collet.
IMO it’s about as efficient a way as a tool can be kitted into a Packout organizer and still leave ample room for tons of accessories. It would be great if Milwaukee sold something like that as a complete set.
Joe H
I want Ryobi 18V to come out with a barrel shaped die grinder like DeWalt and Harbor Freight. Ryobi only has the pistol style 18V which is just not always optimal for hard to reach spots. Having both is nice.
JR Ramos
This is about a $13 kit….$20 is Milwaukee tax and not worth it, imho. Especially if the pad is plastic instead of rubber and if everything is made in China. I’d be interested in seeing if both the abrasives and non-woven are worth a hoot at die grinder speed, though. A lot of the cheap import stuff is not and it’s a good category example where spending more gets you better performance, better results, and longer life, so the cheap stuff is usually false economy. All of this would be fine on a drill at those lower speeds….except:
Hopefully they chose a quality abrasives manufacturer that uses good resin and good process (and a good backer) so it all holds up under heat and flexion. But it’s curious that they decided upon zirconia…maybe marketing or maybe Milwaukee truly doesn’t know any better. Zirconia abrasives are less sharp and require heavier pressure to cut well (but they do last Much Better under that pressure and heat than anything but some of the super ceramic grains we have now). These cordless die grinders can’t handle that kind of pressure and will stall out. Less pressure so the tool won’t stall will lead to glazing and slower cutting on metals…would be fine for general stuff like wood, bondo, rust, gaskets, etc. But at least users can buy other flavors of discs to suit their needs. Good quality plain ol’ red/brown aluminum oxide still very much has it’s place, or the slightly better aluminum oxide that is often green (like the 3M Green Corps products). The trend lately with cheap Chinese zirconia and ceramics is kind of funny since so many tools just do not benefit from it and the grains are not great quality anyway compared to the good stuff that 3M and Norton use/make.
Should probably amend your title to state that these are 2″ discs, Stuart. I mean they’re kind of the norm but 3″ is not uncommon (and 4″ is out there, too). And is that backer pad plastic or rubber? I assume the former.
Stuart
Whoops. I went through multiple revisions, with all of the mentions of the 2″ size removed when I wiped the discussion section. Thanks – I added the size mention in 2 places.
I bought a 2″ arbor from MSC, and it was $13 by itself. $20 isn’t unreasonable if the Milwaukee set is good quality.
Richard Miller
I wonder how the quality of the “holder” compares to Roloc.
Nathan
That was going to be my question. I haven’t bought a roloc in years. What do they cost now and do the have an assortment pack.
I remember getting 2 backers and I grabbed some discs from the bins. They are consumables in my mind. But I’ve not looked for some in a while.
Nathan
Oh is the Milwaukee compatible with the other roloc I’m assuming yes?
CMF
I am very happy and satisfied with most of my M12 tools, many being bought before Fuel existed. This angle die grinder has to be one of the few, very disappointing tools. It just stalls to easily.
Within reason, not over powering a tool is logical in using it. This die grinder is literally useless. I thought I had a defective tool but if you read reviews and forums online, you see there is a ton of negative reviews on it stalling too much to be an effective tool. Anyone giving it 5 stars must be using it too polish their fingernails.
scott
I got a whole bunch of them in a value pack from direct tools outlet, ryobi brad but at less than 2 for a dollar and in three or four different grits it was deal. They also had some scotch bright like pads as well. Might be worth a look if you are trying to decide what to get.