AD 56382743 Urethane Squeegee Kit for Nilfisk Advance Sweepers/Scrubbers Priced Each. Fits Clarke Focus II Riders, 3820 Adgressor, 3800 Retriever. The front blade measures 48 4/5" x 2 5/8". The rear blade measures 50 1/2"x 2 4/5". Polyurethane blades are commonly used for special situations where heavy oils or chemicals exist. These urethane blades are also very abrasion resistant and can be used in glass manufacturing facilities, bottling plants, or other areas where broken glass may be an issue. These can also be used on concrete sidewalks and similar abrasive surfaces. Replaces Nilfisk Advance 56382743. Our Part Number AD 56382743