Dremel409 Cut-Off Wheel, 15/16" (23.8 mm) Diameter, .025” (0.6mm) disc Thickness, Cutting Rotary Tool Accessory (36 Pieces)

I had previously been using Dedeco cut off wheels and was satisfied with the quality however they were much more expensive than the Dremel. I read a bunch of reviews here that these cut-off wheels would easily crumble and fall apart. I decided to give them a try. Here are my results:1) Just like the Dedeco they are brittle and you must handle them with care especially not to bump side to side2) Don't over tighten the screw in the collet or you'll damage the wheel and it will more easily break3) Use a steady hand(s) when cutting and avoid any side to side movement. Either wheel (Dedeco or Dremel) will break pretty easy if it receives side pressure4) I used the Dremel to cut through heavy duty staples (3/16"). I was able to cut through about 8 staples before having to replace (I had to cut dozens and the results were pretty much consistent). I thought that was pretty impressive. It was also 20 degrees outside. I even had a few wheels grab the stable a bit and they still did not break but any sideways movement they would usually fall apart soon.5) I also used these to cut through an M6 (metric - 6 mm or .24") stainless steel bolt. Stainless is really tough but I was able to cut through the bolt with just one cut off wheel (just barely one).Bottom line - if you hold steady (preferable two hands on the tool), avoid side to side motion, let the wheel do the cutting, don't exert too much pressure, and don't over tighten the collet screw these should work just fine for most small cutting operations. I only cut steel... not sure how it will perform with soft substances such as plastic etc. Soft substances could cause heating and gum up.

The best cut-off wheels you can buy. Thanks for a great product.

These cutting wheels are cheap and perform superbly when used as advised. ([...])I currently use these to cut aluminum alloy metal ferrules as well as certain plastics, such as those that make up ice coolers. I've broken cutting wheels because I've gone against these tips. With any high-powered tools, caution and scrutiny are always a necessity, especially for obtaining high performance. I've copied the 'Tips' section for those who decide not to follow the link.Pros:- Does exactly the following: Ideal for cutting, grooving and trimming all kinds of metal. May also be used on other materials-including thin wood, plastics and ceramics. Cut-off wheels make it easy to cut bolts or screws or make slots in rusted or stripped bolts and screws for removal with a screwdriver.-CheapCons:-Fragile and can easily break when not used as advised.User TipsThe cut-off wheel cuts only along its edge. Do not attempt to sand or cut curved holes with them. (I do this, but very carefully. Not recommended bc they do break if not carefully applied!)Secure objects to a stable surface while working.Hold the tool so that the wheel is at a perpendicular angle to the material being cut.Keep a light touch, as the wheel will break under too much pressure. If chattering occurs, increase speed.Plastics require very slow speeds, because they tend to melt at the contact point. Wood requires low speeds also, always experiment on a scrap first.

Pros:They cut metalIt is a very economic priceI did not have any skipping (they were tight on the shaft).Cons:They disintegrate after not too longIt can be hard to change the wheel after they disintegrate (at least, it takes some time and fiddling to unscrew the mounting system and rescrew it.)Remember, it doesn't come with the mounting mandel. I have multiple of them, though; it's the standard/generic traditional "shaft + screw" system.My Usage:I used my first three to cut through several six volt battery casings. I'm reusing the six volt battery cases to make a rechargeable battery case. There's a seam, probably about 1/4-1/2 of a mm thick and four inches long, that I cut through to open the case up. My first wheel disintegrated after being almost done with one case. My next one finished that case and another. My third could cut through the third case. There must be some technique to preserve the wheels, but I haven't perfected it yet.Summary: These are great. They wcut through the thin steel metal I was working with. That said, I don't think they would last for anything too thick. They are also of a smaller diameter than the EZ-lock system (this is not a net pro or con, just something to be aware of).

Works great with my Dremel tool. These disks are very thin (not a problem - all brands are all like that) so I usually use 2 at a time for tougher jobs that don't require a fine/precision cut.

...help me choose these. There was a bigger set with a whole bunch of different bits but it was (in my opinion) maybe a lesser quality. So I chose the brand name that went with my tool and it worked most excellently.

Depending on what you're using these for these can get worn out very quickly but they're very effective I highly recommend

These are OK. They shatter pretty easily when cutting some thin sheet metal. The generic black discs on Amazon hold up way better than these.