These high performance 9 Inch X 11 Inch Silicon Carbide waterproof sandpaper sheets are an excellent option for wet or dry sanding. Designed with a resin over resin bond, this flexible sandpaper has an anti-slip coating to ensure good handling for flexible abrasive applications. The addition of water prevents clogging and allows for dust free sanding, long soak is not necessary. 9" X 11" abrasive sheets are ideal for sanding primer, putty, filler, lacquer, and final painting/surface prep. Use either hand-held or attach to a high speed vibrating sander. 50 sheets per pack.