Nilfisk and Tellus GA70 and the Nilfisk and Tellus GM80 vacuum cleaner clip set of two for the top (filter) container, complete with copper filter bracket and 4mm screws. They secure to motor top on to the container.
Lots of times, if these seem loose, it's because the clips have been hit hard to make them grip better, but that just depresses the clip into a dent at the top, further opening them out, loosening their grip further.
Simply, remove the catches by unscrewing them from the inside and "panel beat" the dent back out with a mallet, using the heal of your hand as a dolly on the outside. Screw back on the clips and probably all will be well!!
As it's light, maximise the saving on postage and buy some of the related parts below, such as dustbags and maybe several Puregiene toilet rolls a box of Tissues and some soap or some other accessories!
At the moment, standard postage within Australia is capped at a maximum of $20!