Nilfisk GU355 Dual commercial upright vacuum cleaner and the Nilfisk GU455 Dual upright commercial vacuum cleaner commercial upright vacuum cleaner non-drive pinion bearing, for the roller-brush.
It's on the front right hand side, when viewed from the operating position, and when removed allows access to remove the roller brush. It will also suit the Advance Spectrum.
At the moment, standard postage within Australia is capped at a maximum of $20! Maximise the saving on postage and buy several Puregiene toilet rolls a box of Tissues and some soap or maybe some packets of dustbags, or a hose or a new floor tool, or some other accessories!