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

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

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

Worked great. Broke a snap on m6 tap off in Transmission case. Ground it out with a ball tool.

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.

These little guys are great. They hog out material pretty nicely and fit into a standard rotary tool. I have made hundreds of cuts and material removal on steel and aluminum and they are still very sharp. When cutting steel the metal slivers these produce are very sharp, tiny, and get everywhere. Watch what your wearing as your clothes will get embedded with tiny slivers. Spent hours getting slivers out of my hand one time because I was wearing fabric gloves.