ALI INDUSTRIES 4242 9" x 11" Waterproof Sanding Sheets, Black Our premium waterproof sheets are the ideal choice when wet sanding and finishing by hand are required. The latex backing provide maximum durability while being flexible enough for sanding curved or contoured surfaces. The tough grain helps produce exception finishes in wet sanding applications. We offer a full grit range that will take your project from start to finish. Features 180 grit is best for dry sanding and shaping body filler and fiberglass, as well as paint removal and blending Made with a premium grain, which offers a higher cut rate and uniform scratch pattern which makes it perfect for achieving fine finishes When sanding wood, 180 grit is best for final surface sanding and preparation before applying paint and stain on wood Use dry during the preparation phase of a project, usually when removing existing finishes, rust and oxidation; it is also key when sanding and shaping body fillers and primer coats Sheets can be cut-to-fit 1/2 sheet, 1/3 sheet, or OE sheet sanders USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.