I won't buy this product again, I'll drop an extra $7.00 and buy 3M brand instead.I ordered grits 120 thru 320, as far as sanding goes it does that. The main problem with this product was that the adhesive stuck to my wooden sanding blocks and was a pain in the butt to remove; as it delaminated leaving layers of the sticky backing and paper to be removed for several frustrating minutes each time I changed paper. I've used 3M products and this has never a problem.Also, the 320 had gunky black marks on the sanding face ... anyone in quality control over there?