Diablo, 5 pack, 6'' 220 grit PSA sanding disc. Premium random orbital sanding discs with stickfast backing include 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 sanding life. 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.