Bordo 2210-822 E-Z CHAMFER (1 per Pack)

I tried to use it to repair the beginning of the bolt joint threads. I had smashed in the threads to remove the bolt joint. It only removed a small amount of threads but not enough before it lost its sharpness. I ended using a dremel to grind out the damaged threads. At the end I could've just done it with the dremel, this tool was useless.

Must have for any shop, even hobbyist

You can see the interior blade or the bit that attach to the drill and there is no sign been used for a long time. Literally it broke when using it for the first time