The 3M 1/2" x 18" Non woven Aluminum Oxide Coarse Abrasive Belt is a surface conditioning accessory designed to clean, blend, deburr, and finish various materials. Its Non woven, open web structure helps reduce loading and heat build-up, which contributes to extended operating time and consistency in surface conditioning results. The reinforced backing combined with the flexible Non woven material offers flexibility for precise work over contours and edges. It effectively removes surface imperfections, grindlines, mill marks, and other markings, making it suitable for various applications that require surface preparation.