A fullblade is nearly two feet longer than a normal greatsword, and is therefore treated as though it were a size category Large greatsword for determining its properties, with the exception of those things mentioned below.

A medium character (including a medium character who has been enlarged) must have the exotic weapon proficiency (fullblade) or monkey grip feat in order to properly use this weapon. A character who is size category large may use this as a normal greatsword. A character smaller than medium cannot use this weapon.

Note: This item has been changed from the original to fit more in what I believe is the spirit of what a fullblade should be. It was referred to in the 3.0 Arms & Equipment Guide as "... an ogre's greatsword."