The Mercer Industries Aluminum Oxide Cloth PSA Disc features aluminum oxide grain for a consistent cut and a cloth back to extend the life of the disc. Available in 5", 6", 8", 9" and 12" diameters. Sticks to any backing pad with its pressure sensitive adhesive. Available in grits 36 through 320 for all your sanding needs. Excellent for metal, wood, fiberglass, and plastic. Mercer Industries is a 3rd generation family owned company that was built on core values of Quality, Performance, Delivery, Service, and Price. Founded in 1968, Mercer Industries offers more than 3,000 products for the flooring, industrial, automotive and welding markets. Mercer is committed to serving its customers and providing quality products. We’re here to support you. Please contact our team for more information, and with questions or comments. Claims for warranty must be made within 90 days of the date of purchase. Proof of purchase required. This warranty does not cover any product that has been subject to misuse, neglect, negligence or accident, or that has been used in any way contrary to the purpose intended.