PB 241631 13" .028" Stiff Nylon Disc Scrub Brush for Power Boss / Minuteman Scrubbers. Durable .028" diameter Nylon filament for general duty scrubbing on most flooring surfaces. Nylon brushes will not damage painted or epoxy painted flooring. Great for tile, sealed and polished concrete, vinyl, terrazzo and other surfaces with light to moderate soils and debris. For a softer filament, try the Soft .022" Nylon (241630) brushes. 13" block diameter with clip-on clutch plate. Fits many Power Boss / Minuteman models including SCV 24/26 (26" Disc Brush Models). Will not fit E26 scrubbers. Two brushes required. Priced each. Replaces Minuteman 241631, PB 241631