Sandai Kitetsu

The Sandai Kitetsu is one of the 50 Ryō Wazamono Grade Swords, a "Sharp Sword". Like all of its predecessor Kitetsu swords, this one is said to be cursed.

Roronoa Zoro found the sword in a barrel of cheap katanas in a shop at Loguetown. When the owner first saw it he wasn't going to allow Zoro to buy it, telling him of the curse. Zoro liked the concept and decided to test his luck against the curse. He threw it into the air and held out his arm willing to let it cut him. Zoro's luck won and the blade circled neatly around his arm. The shop owner gave Zoro both Sandai Kitetsu and Yubashiri for his skill and luck.

Abilities
Like all of the swords crafted by Kitetsu, this one is said to be cursed, and will bring a horrible death to all of its owners.

The Sandai Kitetsu has a sharp edge, making it easier to use for cutting. When it was used by Zoro to test his luck against its curse, its previous owner tried to warn Zoro it would cut off his arm. When it missed its blade cut deep into the floor point first with ease leaving only a 1/4 of the blade sticking out of the floor. However, Zoro has commented that the sword appears to have a mind of its own, making it a "problem child".

This sword, when given to Zoro, is used as one of his three swords for his Three Swords Style.

Translation and Dub Issues
The name part of the sword is actually the "Kitetsu" part with the "Sandai" being an identifier of generation. ("San" being "Three", so Third Generation) Thus, the official English versions (FUNimation, Viz) translate the generation identifier but not the name of the sword itself, coming out to "Kitetsu III" in writing (In the Manga, and Anime Subs/Titles) and spoken aloud as "Kitetsu The Third" in the dub.

Trivia

 * It seems from their name and classification, the Kitetsu were made weaker with each new sword. Being of the lowest grade of the three swords, Sandai Kitetsu is the weakest of all the Kitetsu swords. Its name also indicates it was the last of the three to be made.
 * It is the first named sword Zoro wields that is never mentioned as "Meitou".