Gator 9 x 11" Waterproof 400-Grit Ultra Fine Sandpaper, Single Sheet is for achieving a smooth and refined finish during wet sanding between coats of paints, sealers, varnish, and other finishes. Made from durable silicon carbide, this ultra fine sandpaper is designed for precision work. The resin coating extends the life of the sandpaper, outlasting ordinary glue bond sandpapers. Each sheet measures 9" x 11", making it i for detailed finishing tasks in both professional and DIY projects. Model Number: 4239