Gator 9 x 11" Waterproof 180-Grit Fine Sandpaper, Single Sheet is for wet sanding between coats of paints, sealers, varnish, and other finishes. Made from durable silicon carbide, this fine sandpaper provides a smooth and even finish. The resin coating extends the life of the sandpaper, outlasting ordinary glue bond sandpapers. Each sheet measures 9" x 11", making it an excellent choice for both professional and DIY finishing tasks. Model Number: 4242