Sai Yamane Ryu Kobudo IMG 2682

The sai is a three-pronged truncheon and appears similar to a short sword, but is not bladed and the end is traditionally blunt. The weapon is metal and of the truncheon class with its length dependent upon the forearm of the user. It was was one of two weapons used by Okinawan law enforcement officals, the other is the Bo. The two shorter prongs on either side of the main shaft are used for trapping (and sometimes breaking) other weapons such as a sword or bo. 

Weapons Sai IMG 1713