FC 430-4035G Blade Set for Factory Cat. Priced Each. Replaces Factory Cat 430-4035G. 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. Fits popular Factory Cat Tomcat machines such as the 390, 420, 430, 490, 550. Our Part Number FC 4304035G