Nilfisk 40mm neck diameter wet pick-up nozzle for the Nilfisk GWD350 and the Nilfisk GWD350/2 and the Nilfisk GWD375/2 and now the Nilfisk VL500 75-2 Ergo two motor wet and dry vacuum cleaner. It's got 360mm wide squeegee rubber lips for vacuuming wet floors. The neck fits 40mm tubes. See SKU 107407338 For a more affordable version.
At the moment, standard postage within Australia is capped at a maximum of $25 so maximise the saving on postage and buy some of the related parts below!