3M™ Hookit™ Purple Clean Sanding Abrasive Sheet Roll 740I is a heavy E-weight paper abrasive built for long life and high performance during autobody jobs such as deburring, shaping, and rust and paint removal. It is resin bonded to resist heat and features self-fracturing aluminum oxide mineral for ongoing, sharp cutting action. Grades include 36E, 40E and 60E for the toughest applications.