In order to do a basic flip out spin of a sai weapon, bring the fingers over, straight out and back. Move everything outside-in when doing advanced sai spins with lessons from an advanced black belt in Shotokan karate in this free video on martial arts weapons. Expert: Jeff Doss Bio: Jeff Doss is a multiple world karate champion. He holds an advanced black belt in Shotokan and American freestyle karate. Filmmaker: nate thompson