Weiler 20600 6" Nylox Metal Hub Wheel Brush, .022/320SC Crimped Fill, 2" Arbor Hole: Metal Hub - Crimped Round Silicon Carbide Filament For light-duty deburring and finishing in applications such as low-volume manual deburring or general use in a tool room or shop. Weiler's Nylox® abrasive nylon wheel brushes featuring composite metal hub and composite hub construction are manufactured using a molded polymer material to retain the filaments. In comparison to traditional metal hub construction that folds the fill material around an internal retaining ring or wrap wire, these techniques result in a significant increase in fill density and elimination of filament breakage, offering the lowest cost-of-use and greatest consistency of performance in production applications. Weiler's composite metal hub wheels marry the high density and superior filament retention of composite hub wheels with the dimensional stability and shock resistance of metal hub construction, and they feature 2" arbor holes, which allows for convenient mounting on many pieces of equipment. Made in USA