They are weapons from the Superhuman Samurai Syber-Squad. http://cgi.ebay.com/Superhuman-Samurai-Syber-Squad-Servo-5-25-Figure-MIB_W0QQitemZ290112712983QQihZ019QQcategoryZ348QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Yep, they go with the Servo figure. The smaller one goes with the five inch figure, most likely. There was also a ten inch one, who would be the owner of the larger of the two swords.