Part of ninja show in Iga-ryu Ninja Museum near Iga Ueno Castle in Japan. Using of sai.
The sai (釵) is a traditional weapon used in Okinawa. The basic form of the weapon is that of a pointed, prong shaped metal baton, with two curved prongs (yoku) projecting from the handle (tsuka). There are many types of sai with varying prongs for trapping and blocking.
