Diablo's premium 4-1/2 in. x 5-1/2 in. Clamp-On Sanding Sheets include break-through sanding innovations that improve performance, extend sanding life and increase productivity. Featuring an aluminum oxide grit blend and ENDURA-BOND, these sheets quickly remove material while providing the user with a longer sander life. Designed for use in 1/4 sheet palm sanders, these sanding sheets are ideal for all types of wood.