Diablo, 4 Pack, 5”, 60 Grit, Hook Loop, Sanding Disc, Universal Random Orbital With Hook Lock Backing, Extend Sanding Life, Increase Productivity, Premium Ceramic Blend, Remove Material Faster Than Other Sanding Discs, Extra Long Sanding Life, Clog Shield Own Blend Of Grinding Agents, Reduces Loading Maximizing Productivity, Superior Grain Bonding System, Endura Bond, Provides Longer Life Extreme Durability