3M 00624 Green Corps Hookit 8" 40E Grit Regalite Dust-Free Disc Ideal for shaping filler and stripping paint to metal Ceramic aluminum oxide blend abrasive offers excellent cut rate and life Built on E weight paper backing for added durability Open coat construction provides a more aggressive cut and minimizes dust clogging Hookit hook-and-loop attachment makes disc changes fast and easy Several versions feature 7- or 8-hole pattern for improved dust evacuation