Product Details: The 3M 1" x 50 Yard Full-flex Aluminum Oxide Utility Cloth Roll is an all-purpose abrasive for dry sanding with a flexible textile backing. This roll is made of tough aluminum oxide that cuts metal quickly and effectively, offering a reliable and high-quality finish. The closed coat construction yields uniform, fine finishes in dry applications. The gray color makes it easy to identify and use on metal, wood, plastic and fiberglass surfaces. FleetPride is your First Click in Heavy Duty®.