The BO was one of the most important weapons in the ninja’s arsenal.The reason for the hollow part was another trick of the ninja trade. By flicking the bo with great speed, the ninja could launch a poison tipped dart or small knife out of the open end of the staff, often catching the opponent off guard.
I like BO because is a perfect exemple of the harmony and ritm between the maind, body and arm.
Sorry for my english jajaja.
