Review on 🛠️ OSIDU Carbide Burr Set: 8pcs Double Cut Solid Rotary Burr File Drill with 1/4'' Shank for Die Grinder Bits, Metal Wood Carving, Engraving, Polishing, Drilling by William Stevenson

I use them in my workshop at work and they are great. I paid the same price as this whole box for a router from other companies and they were destroyed on first use. **They are just as good as the expensive ones** They last just as long as the expensive ones if not abused. After a year I still had 6 out of 8, even though the new employee was hard on them. I bought 2 more boxes because I was so happy with them. The heads are soldered on (like most) and if you run and run and twist them until they get really hot the head will fall off. First, you shouldn't get them that hot.