Nilfisk BV1100 backpack vacuum cleaner and many other commercial backpack vacuum cleaners such as Pullman, the early Pacvac, Hako Rocketvac amongst many others.
This suction hose inlet cuff, fits at the container end.
It screws on anti-clockwise to the end of the hose and clicks into the lid of the cover, which fits on the top of the backpack vacuum cleaners.
The cuffs we have at the moment, are in black.
They also fit some barrel commercial vacuum cleaners
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!
At the moment, standard postage within Australia is capped at a maximum of $20!