Waterproof and latex backed sheets. Use low grit values for coarse work and higher values for polishing. Unbranded Wet & Dry Sanding Sheets 230 x 280mm 180 Grit (10 Pack) in Black Silicon Carbide. Cloth backed For general purpose metal sanding Light clean-up work and rust removal Sheet size 230 x 280 (can be torn to size) Suitable for use with sanding blocks, Weight: 0.35 pounds, Manufacturer: SLTL4