FC 390754U Squeegee Blade Rear Urethane for Factory Cat. 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. Blade has 5 mounting holes. Priced Each. Replaces Factory Cat 390-754U. Our Part Number FC 390754U