Diablo's premium Comfort-Grip Hand Sanding Block with random orbital sanding (ROS) discs includes break-through innovation to improve comfort, increase control, and extend sanding life in a variety of sanding applications. Featuring a premium durable foam, the Comfort-Grip ergonomic design fits comfortably in any size hand allowing for extended use and superior sanding control. A three-sided sanding block design enables the sanding disc to wrap around the bottom and both sides for sanding hard-to-reach areas. The Hook Lock backed block and sanding discs include a premium ceramic grain blend to remove material faster and offer longer sanding life than standard sanding discs. Clog-SHIELD, Diablo's own blend of grinding agents, reduces loading thus maximizing productivity. The superior grain bonding system, ENDURA-BOND, provides Diablo's sanding discs with longer life and extreme durability.