Added a photo on how it is mounted to the Vixen Polarie.
The Aluminium spacer located between the Polarie base and the mount as well as the locking screw that connects to the Polarie are supplied.
Also found this video showing the assembly on an Astrotrac.
https://www.youtube.com/watch?v=kmDvV-gaFIk
I have seen an ad on ebay showing mounted on a nano tracker, it's quite a versatile little mount
Thanks guys