Got one, love it. Don't know the model but about 10 years ago it was around a hundred. A company I used to work for handed out cobalt drill bits like they were in a penny candy dish. I never used the same bit twice, just threw them in a drawer of my tool box and got a new one. After I left, the wife got me a drill dr for Christmas. I sat there for two nights for over 4 hours a night and didn't sharpen half of them. It took a little time to figure the tricks of working it but once I got the hang of it, the bits were sharp as new. Definately recommend it.