The weapons are replacas of captain of squad thirteen from Bleach. They do not weigh much, less then five pounds all together if I had to guess...

~Finding a blacksmith, he was able to get a suitible weapon for the battles he knew that would have to be fought. 'The weapon is of unknown origins,' from what the smith said to the fighter after handing over the two swords, chained together and the blades, as cold as an artic wind.~