Eastwood CONTOUR SCT® - Surface Conditioning Tool

I have one. It works well, using the right drum for the right job is fairly important to get the results you want.

It's less aggressive than a 7/9" angle grinder with a sanding disk on it, probably down a little power compared to that too but better for bodywork and "surface conditioning" than a 7/9" angle grinder with a sanding disk on it is. Although if you need to blast some gnarly bondo or significant, heavy rust you may want to start with the 7/9" angle grinder and then finish with the SCT.