A great, metal-reinfoced Club made for use in two hands. The tetsubo is a variant of the same concept, as is a modern sledgehammer or very heavy baseball bat.
Bash
The weapon is especially suited to destroying structures, like doors, walls and such. It doues double damage against structures, but when you use this ability you cannot do anything, such as an ActiveDefense or Riposte, until your next shot comes up.
Bash supercedes, and does not combine with, any other damage-enhancing ability including Precision.
Beak
The weapon has a very narrow striking point, or is otherwise very good at penetrating armor. Add +3 points of damage against targets with four or more points of armor, and against objects.
If you use another technique or maneuver that ignores armor or that does extra damage against objects, such as Bash, this bonus is lost.
Great Blow
A Great Blow is a powerful all-out attack. It always requires two hands, even with a weapon that is normally used one-handed. It receives a +3 bonus to your damage, but you cannot do anything, such as an ActiveDefense, until your next shot comes up.
Great Blow does not combine with Bash.