The sai is a traditional Okinawan weapon, often associated with martial arts like karate. It consists of a pointed, trident-like metal rod with two curved prongs on either side. The sai is primarily used for blocking, striking, and disarming opponents, making it a versatile tool in combat. Typically made of steel, the sai is about 12 to 20 inches long and is often practiced in pairs. It is known for its unique design, which allows for various techniques, including thrusting and spinning. The sai is also a symbol of Okinawan culture and is featured in many martial arts demonstrations.