MTP Pack of 30 5" 5 Holes Hook Loop Backing 80/180/320 Grit Sanding Disc Sandpaper Randon Orbit Power Air Sander for Porter cable RO 333, 334 335 Pack of 30 5" 5 Holes (80/180/320) grits Loop & Hooks backing sandpaper Size:5" 5 Holes package come w 10 each of 80/180/320g grits (total 30 ) (loop) backing Good for Porter cable 333, 334, 335, 7335