Wind-lock’s 9in Hook & Loop Sanding Discs fit most standard disc sanders, including the Porter Cable 7800, and come in 80 grit, 100 grit, 120 grit, 150 grit, 180 grit and 200 grit. Choose lower grit numbers for an even, smooth finish, or higher grit numbers for a fine, polished finish. Blue Builder 9in Sanding Discs, Foam Backed, 80 Grit, 5pk