This 2" clothback aluminum oxide sandpaper roll is designed specifically for Delta 18"x36" Sander Model 31-250. 36g is the only grit available in these discounted rolls. Although these rolls are designed for the Delta Sander, they can be used for whatever you may have in mind *Aluminum oxide, resin bond, cloth material for supirior performance *14 wraps per roll *Pre-marked to show proper cut lengths While supplies last.