Sai Neck Chain for Martial arts enthusiasts, or for anybody linking this kind of neck chains.
The sai, initially a Japanese weapon, is a traditional one from the island of Okinawa. However, it is also popular in Chinese Martial Arts. It is often used in Ninjutsu and Kobujutsu. Usually the shape of this stabbing and striking weapon is that of a sharp metal prong with two curved side prongs, (yoku, in Japanese), projecting from the handle, (tsuka). There are many types of sai with varying prongs for trapping and blocking.