363I | Diameter 6″ | Grit 80F | 100 Discs Per Roll No Holes. 3M Stikit adhesive backing allows for quick application and easy removal. Aluminum oxide on heavy F-weight paper backing provides the durability needed for both stock removal and finishing. Open coating prevents clogging to maximize cut and extend the life of the abrasive. Resin bond resists heat to prolong the life of the disc. Convenient disc rolls eliminate the need to remove disc liners from individual discs.