This move is also called Speed Bomb or Side Bomb.It can be executed only in higher places with an obstacle at the edge part of it.

Steps

1. Search for this kind of structure first.
2. Since it was called Speed 360,run towards the obstacle then,perform the Speed Vault then,tuck your knees with your another hand.
3. When you're already in the midair,flip at horizontal axis and not at vertical axis as same as in common flips like front,back or sideflip.
4. One rotation is enough to do this move.
5. Before the rotation would be completed,change your horizontal position into vertical position and release your legs for landing.