Dotco Depressed Center Wheel Adapters, known for their durability, dependability, and versatility, can adapt a 7/8” arbor abrasive to a 5/8”-11 threaded spindle. The Dotco brand is viewed as the premier line of material removal and assembly tools in the industrial marketplace. This is made possible by sound design and manufacturing techniques, producing tools that are small, comfortable and lightweight, yet can withstand the most rugged environments.