Diablo premium sanding sheets include break through innovations that improve performance, extend sanding life and increase productivity. Featuring a premium aluminum oxide blend, these discs remove material faster and offer extra long sanding life than other sanding discs. Clog-SHIELD™, Diablo own blend of grinding agents, reduces loading thus maximizing productivity. The great grain bonding system, ENDURA-BOND™, provides Diablo sanding discs with longer life and extreme durability. These sanding sheets are ideal for hand sanding or orbital sanders.