AD 56507345 50" 8 Double Row Nylon Main Broom for Nilfisk Advance Exterra / SR 1900 / SW8000 Sweepers. An open configuration of crimped Nylon filament. Nylon is a general duty sweeping filament which is heat and chemical resistant. Nylon brooms can be used on indoor surfaces which are irregular and smooth. Nylon brooms can also be used outdoors on smoother concrete and asphalt in dry conditions. Fits Nilfisk-Advance Exterra, SW8000, and SR 1900 Sweepers. Replaces Nilfisk-Advance 56507345, 507345. Our Part Number AD 56507345