The 3M 36516 Green Corps 40 Grit 1/2 in. x 18 in. Abrasive File Belt (20 Pack) is a high-quality product from the trusted brand 3M. These dry abrasive file belts come in a pack of 20 and are designed for use in automotive shops. With a grit of 40, they offer a medium level of abrasion for efficiently sanding and filing surfaces. The green color indicates the coarse grit, making it ideal for removing paint, rust, and other imperfections. Each belt measures 1/2 inch in width and 18 inches in length, providing ample size for various sanding projects.