Sunmight 08120 9" x 11" 1000 Grit Waterproof Sanding Sheets, 50 Pieces Made with high quality water resistant paper backing. Designed with special resign technology that reduces curling issues when wet sanding. Ensures flexibility and lasting performance. Specifications: Grit: 1000 Grain: Silicon Carbide Backing: Latex Paper Bond: Resin over Resin Coating: Closed Coat Dimensions: 9" x 11" Color: Black 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.