AL 7-77-00142 33-5/8" Inner Side Blade for Advance / Clarke American Lincoln Smart 2000-46", SC7730-46" and SC7740-46" Riding Scrubbers. Also fits Nilfisk CR 1000XL (46") riding scrubbers. Durable, stiff urethane inner side squeegee for Nilfisk-Advance / Clarke American Lincoln Smart 2000, SC7730 and SC7740 46" models. Will not fit smaller 40" models, use AL 7-77-00140. Measures 33-5/8" x 2-3/4" with 7 mounting holes and 9 slots (Smaller 40" models have 8 mounting holes. Please check your model before ordering). Works in conjunction with the tan gum outer squeegee, AL 7-77-00143 / 56515840. Two inner side blades required per unit. 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. Priced Each. Replaces Clarke American Lincoln 7-77-00142. Our Part Number AL 7-77-00142