◇ Sai (Trident) "Sai" and "Karate" are related in that the sai, a weapon used in Ryukyu Kobudo (Okinawan martial arts), is used in training to deepen the techniques of Okinawa Karate. The sai enhances the basic techniques of karate and is effective in improving striking power, defensive techniques, and concentration. It is believed that sai and karate create a synergistic effect. The kanji "釵" (sai) originally means "hairpin," and it is said that the weapon came to be written as "釵" because its shape resembles a hairpin. It is used in Ryukyu Kobudo and other martial arts for techniques such as striking, thrusting, receiving, hooking, and throwing. ◇ Brand: Shureido ◇ Length: Approximately 47cm ◇ Handle Width: Approximately 13cm ◇ Set of 2 【Regarding Shipping】 If you have a preferred delivery date and time, please let us know after your purchase. We strive to ship promptly, but please understand that it may take a little time. Please note that shipping to distant areas such as Okinawa Prefecture and Hokkaido will be cash on delivery (COD). 【Regarding Inquiries】 If you have any questions, please feel free to let us know in the comments section.