Good night (well, for some not really!)
A friend found this on eBay and gave me the link, already bought one, looks nice for some small builds.
http://www.ebay.com/itm/221895737110?_trksid=p2057872.m2749.l2649&var=520789026714&ssPageName=STRK%3AMEBIDX%3AIT
Don't know if is the correct place to post, if not please move the topic!
It's part of a cable channel, like this one: https://www.rk-rose-krieger.com/english/news/new-products/archive/blocan-cable-channel-systems/ (https://www.rk-rose-krieger.com/english/news/new-products/archive/blocan-cable-channel-systems/). I built a looper into that stuff, it's really great!