3M Cubitron II Cloth Belt, 947A, 80+, X-weight, 3-1/2 in x 15-3/4 in Our 3M Cubitron II Abrasive Belt 947A built with 3M Precision-Shaped Grain cuts metal dramatically faster and cooler, and stays sharp longer than conventional ceramic beltsIts X-weight poly-cotton backing is flexibleThis belt is optimized for low and medium pressure applications on stainless steel, mild steels, and aluminum. Product Information Brand 3M Part # 7100138251 Origin Country USA Product InformationAn X-weight poly-cotton backing is optimized for flexibilityCan be used with Backstands, File Belt Sanders, Inline Sanders and Stroke SandersCool cutting action lessens the risk of heat-related damage to workpieceIncludes a grinding aid for less grinding friction and cooler cuttingLasts up to 4 times longer than conventional ceramic beltsRemoves material faster, with less pressure