3M Imperial Wet or Dry Sheets, 9″ x 11″, 320 Grit
Special resin-over-resin bonding technique resists heat and holds the abrasive particles to give you amore uniform cut. Highly wear-resistant and waterproof. Sheets are silicon carbide and can be used wet or dry. The lowest grit is the coarsest. Sheet measures 9″ x 11″.