Power nozzle base assembly that everything mounts to from the motor to the brush roller. Assembly includes the rear wheels with axels and the front wheels with axel and hardware. Part number molded into part H-5190131-A. Also interchanges with the Royal bagged version Lexon S20 premium power nozzle. Part is no longer in production by Hoover/Royal. Our inventory is low as of 3/29/25. When sold out the price will show $00.00 DDA