Diablo's premium drywall sanding sheets include break-through innovations that improve performance, extend sanding life and increase productivity. Featuring a premium aluminum oxide blend, these sheets deliver smooth finishes, faster and offer extra-long sanding life than other sanding sheets. Clog-SHIELD, Diablo's own blend of grinding agents, reduces loading thereby maximizing productivity when sanding drywall, mud and plaster. The superior grain bonding system, ENDURA-BOND, provides Diablo's sanding sheets with longer life and extreme durability. These sanding sheets are ideal when sanding medium to large surface areas.