"Flick triangle" help

I’ve been wanting to learn that trick from Hiroyuki Suzuki but I can’t find any tutorials. The only one I found had a light background and it was in Japanese. If anyone knows how to do this trick please make a tutorial for me. It would really be appreciated.

There is a tutorial on it on youtube

I’m pretty sure if you search it up you can find it, but if not, I think the guys name is kristhox

I found the video but it is no longer available…I guess I will just figure it out on my own. Thanks for helping anyway