3M Cloth Belts are designed for portable sanding Tool. These belts have abrasive grain and premium aluminum oxide blended minerals on a heavy Y weight cloth backing. The film splice allows for the belt to be run bi directional, making it economical and durable. Designed for portable sanding Tools. 3M Cubitron abrasive grain and premium aluminum oxide blended minerals on a heavy Y weight cloth backing. Film splice allows for the belt to be run bi-directional. Economical and durable. Available in multiple grits.