This is four rolls of 80 grit paper, pre-cut for the Jet 16-32 sander. Aluminum oxide with cloth backing, X weight. This is Hermes brand, which I've never seen before. It is lesser quality than Mirka or Deerfos. It does not indicate where it is made, so it may be from China. Though it is supposed to be 3" wide, the width varies from 1/8" under to 1/16" over, so you may have some gaps when mounted on the drum. I'm selling greatly discounted as a result. Limited quantity. When it's gone, that's it. Ask any questions before purchasing.