I like this guy. I've always wanted one, but didn't pull the trigger until recently. I have always used 4 1/2" flap wheels and 2" roller wheels for prepping and working metals. While they've served me well, this device actually offers some features that others don't. The flexibility of the disc, combined with its high rotation speed, makes it a leader in fast and controlled metal removal, whether in metalworking or surface preparation. The discs don't last as long, but honestly that's more of a