Sunmight Waterproof 07222 1500 Grit Paper Made with high quality water resistant paper backing. Special resin technology reduces possible curling problems during wet sanding. Wet or dry sanding. Works on all surfaces. Extreme flexibility. Extreme durability without tears or curling. Superior cutting when hand sanding. Finest finish wet or dry. Diameter: 5-1/2" x 9" Grit: 1500 50 sheets Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.