Diablo, 10 Pack, 6'', 220 Grit, Sanding Disc, Hook & Lock Backing Includes Break Through Innovations That Improve Performance, Extend Sanding Life & Increase Productivity, Designed For Use In Orbital & Are Ideal For All Types Of Wood, Metal & Plastics, Premium Ceramic Blend, Superior Quality Formulation Designed For Fast Material Removal & Long Sanding Life, 6 Hole Design Pattern For Fast & Precise Alignment On 6 Hole Sanders.