Aluminum Oxide / Silicon Carbide 3M polishing papers with super flexible non-woven backings for polishing flat or curved softer surfaces: acrylic, polyurethane, solid surface composites, fiberglass, aluminum, precious metals and finished wood. Use with or without water. Work in sequence from coarsest to finest grade (1-30). Comprised of micron-graded aluminum oxide and silicone carbide particles slurry coated onto a non-woven synthetic backing, the superior flexibility of this product allows for fast and easy finishing and polishing on flat and contoured surfaces. Finish plastic, polyurethane, wood, and solid surface composites Removes scratches and restores transparency to acrylic and polycarbonate windows on buses, aircraft and trains Precision micron grading provides a uniform, consistent finish. Faster hand-sanding and buffing time. Reduces finishing steps. Use wet or dry. Metal and alloy finishing Finish jewelry and precious metals Color-coded micron grading for easy selection.