AD 56410188 Urethane Disk Squeegee Set for Nilfisk Advance. Priced Each. Fits popular Nilfisk Advance machines Hydro-Retriever 3800 / BR 1100. All Deck Blade Kits include both deck and skirt assembly blades. 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 56410188. Our Part Number AD 56410188