DIABLO's premium 5 in. 120-grit universal, 12-hole random orbital sanding (ROS) discs with hook and lock backing includes break-through innovations that improve performance, extend sanding life and increase productivity. Featuring a premium ceramic blend, these discs remove material faster than other sanding discs and offer an extra-long-standing life. Clog shield, DIABLO's own blend of grinding agents, reduces loading thus maximizing productivity. The superior grit-to-backing bond, ENDURA-BOND, provides DIABLO's sanding discs with longer life and extreme durability.