5pc Carbide Burr Set 1/4" Shank Tungsten Double Cut Rotary Die Grinder Bits - Cutting Burrs For Fordom, Dewalt, Milwaukee And Die Grinder Accessories - Wood Carving Metal Working & Sturdy Storage Case

Just started using them to smooth off my welds and seem very durable and well made

I can't comment on longevity yet, as I've only used these a few times, but they are stout. I ordered a huge front bumper for my 4 x 4 truck. The holes for the bumper mounts - 3/8" + thick - were mirror-image offset. One of the holes was supposed to be an ellipse but was on the wrong side. I chucked one of the burrs in my large drill, hogged out the hole into an ellipse in nothing flat. It left a nice clean surface that did not need cleaning up. No visible wear of any kind on the cutting edges of the burr.

Have only used 2 of the set so far. They seem very good. Used the large standard tip and the Christmas tree shaped one. Don't seem to be wearing, and are very strong - take off metal quite well. Have been using them for enlarging holes for door latches which were out of line. Seem to be well made too. Good set also.

Good tools for the money. Stay away from wood with heavy saps or hard steels. Works very well on mild steels. Nice storage case.

The deal was so good I didn't believe it was real.The burrs are extremely inexpensive. I received the burrs in two days.They work great on wood, aluminum, and mild steel. They are extremely sharp, no wobble, and showed zero wear after use. I will be buying these again. I have some high carbon steel from welding and if they're as good as they seem, one set will be enough to finish the project. These burrs are absolutely fantastic at 60% less than what HF sells their set for.