PORTER-CABLE 77225 220 Grit Drywall Sanding Pad (5-Pack) Durable aluminum oxide grain for longer disc life and higher removal rates Premium foam pad for even material removal and long pad life Foam backed Durable aluminum oxide grain for longer disc life and higher removal rates Premium foam pad for even material removal and long pad life Foam backed Compatible with the Porter-Cable 7800 drywall sander Includes five 220 grit sanding pads