Its an arm trick. And its awesome. Got some easy to learn flashy elements.
Awesome trick cant wait to learn it!
I’ve been looking for good arm tricks lately and this looks promising
Thanks for the tutorial!
I’ve been trying to find a cool looking, not too hard to learn arm trick, and this looks like a good start. I made up my own, but it was basically just arm mounting, then dismounting, no real element to it. Thanks! 
I’m glad it helped! Here are a couple more simple ones you can work with.
You can find all my tutorials listed by starting mount here if it helps
http://www.mryoyothrower.com/trick-tutorials-by-starting-mount.html