5 Pack, 9 In 80 Grit Coarse Drywall Ros Hook Lock Discs Diablo’s Premium Drywall Sanding Sheets Include BreakThrough Innovations That Improve Performance, Extend Sanding Life And Increase Productivity Featuring A Premium Aluminum Oxide Blend, These Sheets Deliver Smooth Finishes, Faster And Offer ExtraLong Sanding Life Than Other Sanding Sheets ClogSHIELD, Diablo’s Own Blend Of Grinding Agents, Reduces Loading Thereby Maximizing Productivity When Sanding Drywall, Mud, And Plaster The Superior Grain Bonding System, ENDURABOND, Provides Diablo’s Sanding Sheets With Longer Life And Extreme Durability These Sanding Sheets Are Ideal When Sanding Medium To Large Surface Areas