One drop project

So I saw yuuki spencer do a trick in his 07 worlds routine and it was really cool. Then I saw a tut on the same trick that really wasn’t very good. does anyone know one drop project?(thats the title that was on the tut. I’m not sure thats what its called)

The title of the site was 1dropdesign.com? I think thats it but is this it:

http://yoyoexpert.com/learn/091-master-yuuki-slack.html

Called Yuuki Slack-- Very cook and famous trick!

-Evan

this is what you are talking about right? this one is great too, as well as yukki slack

Yeah, that is what I was thinking of as well.