Revolving Blade Sword

The Revolving Blade Sword (廻転刃刀, Katen Yaibatou) is a superheated rotating blade capable of slashing through the metal of most knightmares; the Mordred withstood a direct hit from a revolving blade sword without a scratch. The sword is constructed similarly to a chainsaw, wherin small blades (also known as teeth) circulate around the length of the blade; the main difference is that heat is used to further the effectiveness of the sword, making it even sharper. Revolving blade swords were originally used only by the Four Holy Swords and Kyoshiro Tohdoh, but later became standard equipment for all Black Knight commanders. When Tohdoh began using the Zangetsu, he abandoned the revolving blade sword in favor of the "brake sword." There are also simplified versions which unfold and are shaped more like batons with a blade extending from the top, which was used by the standard knightmare of the Black Knights in R2, the Akatsuki. There is a Britannian equivalent to the revolving blade sword that predates the Japanese model, called a Maser Vibration Sword.