3M Emery Cloth Assort 03008, 3-2/3 in x 9 in, 6 Sheet/Pack, 20 Pack/Case3M Emery Cloth is designed for metal sanding jobs that require durability, such as removing rust and corrosion from metal – ideal for auto repair. Its tough emery abrasive combines various mineral oxides and is mounted on durable cloth backing that resists shredding and tearing. All of it is resin cured for overall durability to last much longer than standard sandpaper.