Advance Floor Broom 50 inch 8 DR Proex/Wire Fits Models 6340, Exterra PN 507424. Forklift Supply – Aftermarket Advance Floor Sweeper Scrubber Broom 50 inch 8 DR PN 507424 Review Tagged on: Floor Cleaning Machine Parts & Accessories Janitorial & Sanitation Supplies Total Source Parts and Accessories Vacuums & Floor Cleaning Machines RecordingPetal May 18, 2018November 5, 2018 Rotary Floor Brushes and Pad Drivers No Comments