This unit I belive is produced by Astro engineering in the Uk, scroll down the page at this link.
http://www.astro-engineering.com/Cam...cameraand.html
You can get it locally via Telescopes-Astronomy shop in Adelaide. There are two variants, standard ad deluxe. The deluxe one has two rings and is a bit more stable for heavier camera's or camcorders.
Regards
Fahim