PB 3305809 8 Double Row Proex Main Broom for Power Boss Sweepers. A mix of 3 different diameter x-shaped polypropylene filament which is designed for sweeping indoors and outdoors on smooth to irregular surfaces. An open configuration. Proex is a general duty sweeping broom. 42" length. Fits Power Boss Models Core 50, 5500, 5550, Commander 82 Series, Monitor 82 Series, SW/75II (Series II), 80, 82, SW/8X, SW/8XR (Armadillo Jr) and 8290 (TSS82, CSS82, ISS82) Series Sweepers and Sweeper/Scrubbers. Will not fit SW/88 Series (SW/88LD, SW/88HD - use PB 3300313). Also, will not fit 75 series, use PB 3300312, 36" Proex. Replaces Power Boss 3305809, 305809. Our Part Number PB 3305809