3M Utility Cloth Sheet 211K, Aluminum Oxide, 11" Length x 9" Width, 100 Grit (Pack of 50) Aluminum oxide abrasive cuts fast and works well for a variety of surfaces and tasks Flexible sheet works well on contours Durable, light-weight cloth backing can be twisted or folded to access hard-to-reach areas Sheet can be torn by hand for convenient sizing and reduced waste Suitable for use on both ferrous and non-ferrous metals