ACE PREMIUM 9X11 320 GRIT 4PK *Sandpaper Type: Aluminum Oxide *Product Type: Sandpaper *Sheet Length: 11 in. *Sheet Width: 9 in. *Grit: 320 Grit *Grit Type: Fine *Number in Package: 4 pk *Usage: Multi-purpose *Wet or Dry: Dry *Premium flexible paper * Premium grain * Anti-clog coating *Discovery CON, NBR, SUP, EXP