Weiler Dually Wheel Brush, Narrow Face Root Pass, 6 in Brush Dia, 3/16 in Face Width, 5/8-11 Arbor Hole Size, Stringer Bead Knot Filament/Wire Type, 0.02 in Filament/Wire Diameter, Steel Fill, 1-1/8 in Trim Length, 12500 rpm Maximum, Threaded Arbor Attachment. Dually 6" Filler Pass Weld Cleaning Brush features a dual-hex nut design that simplifies periodic flipping of the wheel for maximum cleaning action, long life and safer use. 5/8"11" double hex nut for use on right angle grinders. At Weiler, we passionately embrace change to improve our products and our processes to move the company and our customers forward. By bringing new ideas and creative problem solving together in an open, collaborative environment, we will improve our customers' productivity and create profitable growth. Weiler Abrasives is eager to create a collaborative partnership to overcome your toughest cleaning, grinding, cutting, de-burring and finishing challenges. Weiler manufactures precision brushes, abrasives, and maintenance products. The company was founded in 1898 in Germany, is headquartered in Cresco, PA, and is International Organization for Standardization (ISO) 9001 certified.