Rocaris 10 Pack Flap Wheel, 120 Grit for Rotary Tools，1/8 inch Shank (32X10X3)

These little flap discs work great! Ive used them with a rotary tool as well as even a power drill and they really do the job. Theyre 120 grit but theyll take metal down quick at high rpm so you have to keep them moving. They do fray up a bit but they keep working until the grit wears down. Id recommend them.

Using my rotary tool, I gave it a test on some scrap wood (see photo) and it bit right in. I was able to cut a groove in seconds. So, it seems to me to be a bit more aggressive than 120 grit. I took off a star for this apparent inconsistency. Otherwise, these are a great addition to my rotary set. Better yet, Im throwing a few in my drill bag because I see them being helpful when I do something like deck building. There always seems to be a time you need to take off a little of a bad cut or find a way to get around a proud obstruction. These should do well for that purpose. I did not try it on metal. I see no reason that it wouldnt also take off rust as advertised because these have some serious bite to them.