YUFUTOL 20pcs Solid Carbide Burr Set 0.118‘’（3mm）shank Tungsten Carbide Rotary Files Burrs with 3mm Cutting Head diameter Fits Most Rotary Drill Die Grinder for Woodworking,Engraving,Drilling,Carving

Really fun to use if you like power carving old man faces in wood.

Used on broken bolts. I broke 1/4? bolt on small engine (throttle control). I then broke bolt extractor inside the broken bolt. I used these to grind out the bolt and the bolt extractor. The bit was alittle dull (but still working) by the time I finished, but this was better than I was expecting. I also broke a 3/8: head bolt on the same engine (8 HP flat head). I used the bit to grind 1/8" (size of the burr bit) center hold about 1/2" deep into the center of the bolt as a guide for drilling out the rest of the bolt. This set has varrious shapes. A few of them can grind on the tip, which is what I used to go strait down into the center of the bolt). This same bit has cutting surface on the side so once you get down inside, you can then move laterally to cut more.

Bought these to help do some touch up work that my dremel sander drums were too wide to get into. The variety of tips are great and helped get into the corners to smooth out some of the cuts. Then a light sanding and the edges were excellent. The only reason I'm giving this 4 stars vs 5 is they are all the same "grit" and if you're not careful, they will grip and rip any soft wood like the birch plywood I was using here. I haven't tried them on thicker hardwood yet or any other materials but suspect they will work well. And they fit into my dremel perfectly with no issues at all. Good length and diameter.

When I saw these on Amazon, I thought they might provide me with some variety of shapes I was looking for. And while I would have preferred a bit more variety, I can't complain. Because these little burrs have the look and the feel of actual high quality machinists end mills and cutting heads and machinist's tools like we ran in our CNC mills at the machine shop where I worked for many years. I use these types of burrs to hand carve Lexan (plastic) into durable and detailed two part molds. But these are by far superior to the standard types of burrs like the ones I am used to buying, that are commonly sold at hobby stores and big box hardware / lumber stores, or the ones that come in the standard sets that I normally buy. These are are so much sharper than those standard type burrs, that they actually make a positive cut with a lot less pressure applied. With the standard burrs, I have to constantly be fighting my Fordom tool, to try to keep from the bur suddenly jumping up or riding up out of my work area, and marking up parts of my project that I don't want cut or marred. But with these little beauties, I have so much better control, and the cut much cleaner too, which makes for a very much nicer experience with, more detail too. So now I can't wait to get to work with these, to see what the new possibilities of a much better end result, and with an easier time of accomplishing it as well!

I was in need of some burrs to work with plastic and balsa wood. I think they will fit my needs perfectly. I like the selection of burrs but there are some I will use more than others and there are probably some burrs I may not ever use. They were inexpensive and not using some burrs won't be an issue for me. The ones I have used work well for me and I am pleased with their performance.

I did a lot of research into which burrs to buy for my new rotary tool as I had seen some pretty bad reviews on a lot of the ones that came up when doing searches. I was hesitant at first on these sets because the shanks are technically smaller then 1/8" which is what I needed and I saw another review say they didn't fit. That was not the case, they fit find in my 1/8" tool, just have to be tightened slightly more. Over all these cut through some oak wood like butter. Very satisfied with these and I will probably go with more YUFUTOL burrs in the future.

Used the 3/32 ball to engrave 142 times (1~142) into 1018 steel with a foredom tool and the burr is still going strong.

These bits did exactly what I wanted them to do . I was skeptical about these bits. I am a professional auto machanic. Someone broke a EZ out in a aluminum engine . These bits grinded right through it . I did break 2 of the bits . They going at such a high rpm. If you just slightly touch the material , it will break the bit. But these bits are worth their weight in gold !

Works very well on soft materials like wood and plastic, haven't tried it on soft metal yet but i guess that it's not efficient enough but it's good for what I want it for... Note: shank is too short

I bought this for wood carving. Compared to buying from a store, these are as good quality but far less money.

Bought a new piece of real estate and almost ALL the doors didn't shut properly due to misalignment on the latches/strike plates. I used these on my Dremel to file out a bit of the plates and it worked great. Amazing value, you should buy a set.

I used this for fine cutting on plastic models, some light wood and pumpkin carving. Exactly what i was looking for. Works well - very durable.

I broke one grinding metal but I may have put yo much force on it. Price wasn’t bad at $26 CAD.