This is the weapon of O-Dai in Sakamoto Days. The blade spins. The handle in the middle can be disassembled. It's made of a material similar to plastic and is lightweight. I bought it online for about 10,000 yen. I've used it once. I am also selling the costume on another page as a set. I will prioritize those who want to buy the set, so please be aware of this if you are purchasing at the same time.