Nilfisk CA340 portable electric floor scrubber and the Advance Micromatic electrically operated walk behind automatic floor scrubber rear squeegee holder similar to the complete FRONT squeegee pictured in the centre of photo.
The rear squeegee holder differs from the front squeegee holder, by not having the roller housing on them, which have the rollers in them.
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 auto scrubber parts below!