This was formerly the triangular shaped soft dusting brush that fitted under the accessory cover on The Nilfisk Extreme X100 X150 X200 X210 and X300 vacuum cleaner. It also was for the Nilfisk Power P40 and P20 Allergyvac and the Nilfisk SELECT. The part number was 147-0300-500
As you can see now, it is totally different.
At the moment, standard postage within Australia, is capped at a maximum of $20! So, 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!