Sword Breaker

Based off of a Chinese weapon which literally translates to Sword Breaker. Most examples are more closely related to maces or clubs being a solid piece of metal witha thicker ring or bulge towards the end. There are others like that have "blades" similar to European rondel daggers. Since rondel daggers were designed to piece cloth/mail armor and get into the gaps of metal armor we can assume that the larger versions found in china likely had similar functions along with the benefit of being able to clobber someone with a big rod of metal. I own one, it is very heavy for a one handed weapon.

https://www.thingiverse.com/thing:3614323

https://www.thingiverse.com/thing:4125971