The hanbo is a quarterstaff used in martial arts. Traditionally, the hanbo was three shaku, or 90 cm long, exactly half the length of the rokushakubo. As with any weapon, bearers would often find one best suited to their build, opting often for one that comes up to about waist/hip height.
The hanbo can be used as a means of striking, restraining or even throwing someone. It is useful to know because sticks are abundant and can be picked up if attacked. Masaaki Hatsumi says that one who wishes to be a swordsman should first master hanbo techniques, since it can be held and utilized in a similar fashion to a Japanese sword (but without the cutting edge). When utilized properly (parrying by deflecting the sword by striking the flat parts of the blade), it was more than capable of defeating a katana.