The sanding pad for grinder is what we use for "Scraping" or heavy removal on aluminum and stainless. These sanding backing pads are hook and loop style with a 5/8"-11 threaded to fit on most variable speed and full speed grinders. The backing pad has a foam backing to help be a lot more forgiving when sanding on an edge or flat.
We recommend pairing them with 5"or 6"hook and loop sheets of sandpaper.