Norton ProSand 11 in. L X 9 in. W 120 Grit Aluminum Oxide Sandpaper 20 pk

The Premium heat-treated abrasive offers faster cut and longer sanding life than 3X technology. Heat treating toughens the grain allowing it to stay sharp and last longer under extreme pressure, making it the most durable abrasive on the market. Super sharp edges allow grain to remove material faster.