Review on Ultimate Precision: Double Cut Carbide Rotary Burr for Finest Material Shaping by Michael Willis

I bought this because I had to cut off some of the granite (note they aren't designed for that in my opinion) so I can install a top flush tank.I had no idea how durable granite was.I was sure I would be breaking all bets when I tried to do the job it took a long time (no mistake on the stakes) but to my surprise it didn't break and I put a lot of pressure on for over 10 minutes they should be more than enough if you're using working wood.