Vespa 180 rally - Front fork

Hello,

I'm doing a full restoration on my 69, vespa 180 rally. 

I want to insert in my vespa a front disk brake. I have seen a lot of forks, but in this video, https://vimeo.com/71576972 , in the first image, have a front fork that fits fine in this vespa.

What is this fork, and if is hydraulic or semi-hydraulic?

Hope that anyone coud help me,

Best regards,´

João Areias, Portugal