The Ninja Sword is one of the most distinctive and well-known swords associated with Samurai warriors. The Ninja sword (ninjatō, ninjaken or shinobigatana) are the swords thought to have been wielded by the legendary Ninja assassins.
Ninja swords feature heavily in popular culture and are often depicted as the weapon of choice for black-clad assassins stalking their prey through the shadows. Today, the Ninja sword is mostly utilized by practitioners of ninjutsu or Masaaki Hatsumi. In actual fact, there is very little evidence to support the claim that ninja swords were ever used by Ninja.
As there is very little physical evidence to support that Ninjato were used by Ninja, there is a certain amount of artistic license taken with these swords and they shouldn't be taken to seriously.
All of our Ninjato have been hand forged using similar methods to produce our Katana.