32mm Numatic Henry and the Numatic Junior and the Numatic Hetty vacuum cleaner hose threaded tank end cuff, fits George, Charles, and most of Henry's commercial family!! It screws on the threaded entrance to the bottom container.
It screws onto the black vacuum hose with an anti-clockwise thread.
As it's light, maximise the saving on postage and buy some of the related parts below, such as dustbags and the filters or a new floor tool.
At the moment standard postage within Australia, is capped at a maximum of $20!