The 3M 36146 Multi-Hole Hook & Loop 180 Grit 3 in. Sanding Disc comes in a pack of 50, featuring a dry design for use with automotive tools and supplies. With a grit of 180, this blue disc is designed for efficient sanding and is easy to attach with the hook and loop design. Perfect for achieving a smooth finish on various surfaces, these sanding discs are a must-have for any automotive shop.