Ideal for removing orange peel from painted surfaces, and polishing metal, wood and plastic. Sheets measure 3 x 4′ (7.6 x 10.1cm) for large working surface and extended life. Color coded back print makes for easy grit identification. Can be used wet or dry, for best results a light mist of water containing a drop of dish detergent for lubrication is recommended. A double density 2 x 3′ (5 x 7.6cm) back up pad is also included.WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov