TN 70471 46" Pre-Sweep Main Broom for Tennant 810 and 810D Riding Sweepers. This is the smaller of the two long main brooms on the unit. The larger main sweeping broom measures 49.5". This 3 single row poly pre-sweep broom measures 46" and has a much smaller core diameter. Fits Tennant 810 and 810D (Diesel) power sweepers. One pre-sweep broom required per unit. Priced Each. Replaces Tennant 70471. Our Part Number TN 70471