014 in Filament/Wire Diameter, Steel Fill, 1-7/16 in Trim Length, 6000 rpm Maximum, Unthreaded Arbor Attachment.Polyflex Wheel Brush, Encapsulated Narrow Face, 6 in Brush Dia, 1/2 in Face Width, 1/2 to 5/8 in Arbor Hole Size, Crimped Filament/Wire Type, 0..