This Kabutowari is made of a hard aluminum/zinc alloy, featuring a Tsuka wrapped in a cotton cord. It presents a fairly sharp tip but no blade, as it is not designed to cut or stab, but rather to crush. The hook near the Tsuka was very likely used to parry the opponent's sword, hook the cords of the armor, or perhaps even pry armor plates open.

Kabutowari means "crushing the Kabuto", the iconic Samurai helmet, and many Samurai carried the Kabutowari as an additional weapon.
Several interpretations of this weapon's name and its intended use exist, as 'Kabuto' could also mean 'skull' and 'wari' to 'split'. However, it is very unlikely that a blunt weapon could actually crush such a Kabuto (helmet).

There are very few historical references and no school is known for still using this weapon today (except as an extension of the Jutte). It can though be of interest for ancient Koryu researchers and the excellent craft of this weapon makes it the ideal addition to a collection of traditional Japanese weapons.