AD 56392251 Black Neoprene 3-Blade Rear Squeegee Kit for Nilfisk Advance. NNeoprene is used in cases where the standard duty tan gum blades won't hold up and distort. Neoprene blades are naturally chemical and oil-resistant and can be used in food processing plants, chemical plants and areas where tan gum blades might be affected by chemicals. They are also naturally chemical resistant and can be used where caustic chemicals exist. This kit contains the 3 rear squeegees on the curved rear squeegee assembly. The outer blade measures 46-1/4" x 2-9/16" with 8 mounting holes. The kit also contains a support blade for the rear squeegee and the other is the slotted front blade (with 7 notches). This kit fits Advance Convertamatic 325LX, Convertamatic 385LX, Hydro-Retriever 325HD, and Hydro-Retriever 385HD with serial numbers below 0606047. Please check your parts manual / serial number / current measurements before ordering. Priced Each. Replaces Nilfisk Advance 392251, 56392251. Our Part Number AD 56392250