3M™ Cubitron™ II Hookit™ Cloth-Backed Sanding Disc 900DZ 3M™ The 3M™ Cubitron™ II Hookit™ 900DZ Cloth-Backed Sanding Disc is engineered for unmatched sanding efficiency with its precision-shaped abrasive technology. Using uniformly shaped ceramic grains, this disc ensures fast material removal and extended lifespan while minimizing effort during sanding. The Hookit™ system allows for quick and easy disc changes, maximizing productivity. Ideal for sanding metal, composites, and wood surfaces, it is particularly valued in automotive bodywork, metalworking, and machining applications. Learn more