Carbide Burr 1/4" Shank, SC-3 Tungsten Double Cut Rotary Die Grinder Bits - Cutting Burrs for Milwaukee, Dewalt and Makita Die Grinder Accessories - Wood Carving Metal Working & Sturdy Storage Case

These are the best burrs I've ever used. I use them on brass, wood and concrete - they are not meant for concrete, but they perform really well, better than burrs for stone or various diamond burrs I've tried. Sharp and durable.

Great product !

I purchased this item because my wife and I moved into a hundred year old house with some door closing issues. Many of our doors would not close correctly because of aging and or gapping in the strike plate hole, or just the the door warped with age and weather. So, I read some of the reviews and made the order. The item is quality and well built. (And it cuts through wood and metal like butter.) All my doors are now working and closing correctly and the bit doesn't seem to have even been used. It's pretty sharp and very sturdy. ( I put it through the paces) For the price it's a steal.So, if you've got the same issues I do, it will work with just a regular old drill on he highest speed!Hope this helps.

Excellent tool, got the job done.

Used these burrs on 1095 steel to clean up hard to reach areas and clean of the edges of a couple of knife blanks I made. They did a great job and show zero wear or dulling. Very happy with these!