Constructed of high-strength ABS material, durable enough to stand up to everyday use. Compact design fits easily on most housekeeping and cleaning carts. Built-in compartments house up to three different tool attachments: Top Shelf: Quick Change Microfiber Frame, Middle Shelf: Quick Change Duster Frame, Bottom Shelf: Quick Change Squeegee, Brush or 3-in-1 Tool. Easily installed to compatible carts with enclosed hardware (instructions included). Accessory Type: Storage Tray; For Use With: Rubbermaid® Commercial 1805985, 1860740, FG9T7200, FG9T7400, FG9T7500, FG9T7600, FG9T7700, FG9T7800, FG9T8000, FG9T9200, FG9T93010000; Material(s): ABS; Color(s): Black.