Diablo 5 In. Universal Hook Lock Vented Sanding Disc Premium ceramic blend, a superior quality formulation designed for fast material removal and long sanding life. 12-hole universal hole pattern, a one-size-fits-all design fits all 5 and 8-hole sanders for fast and precise alignment. Premium hook and lock backing enables repeated attachment and removal of discs for a consistent secure connection. Clog-SHIELD, a proprietary blend of grinding agents, reduces pitch built-up and clogging. ENDURA-BOND, grit-to-backing bond, provides sanding discs with longer life and extreme durability. For orbital and dual action sanders in wood, metal, and plastics. Diameter 5 In., Grit 80 Grit, Abrasive Material Ceramic Blend, Backing Type Hook Loop, Pkg Qty 50, Package Type Clamshell