AD 56462877 3 Blade Rear Squeegee Kit for Nilfisk Advance Riding Floor Scrubbers. This kit contains the 3 rear squeegees on the curved rear squeegee weldment. Fits popular older models: Hydro-Retriever 2067, Hydro-Retriever 4500. This kit contains the slotted front blade, neoprene support blade, and main rear blade. Rear blade measures 80-3/4" x 5" with 12 mounting holes. Priced per Kit. Replaces Advance 56462877, 462877. Our Part Number AD 56462877