Durandal is a rapier, and is almost equal to Cavendish's height when he is sitting. Its sheath and hilt have a dark-light colored, vertical-striped pattern. The hilt is also adorned with several rings and graven flowers.
When Durandal is unsheathed, it seems to steadily shine.
Biken: Blue Bird (美剣 青い鳥 (ブルーバード),Biken: Burū Bādo?, literally meaning "Beautiful Sword: Blue Bird"): Cavendish stabs his enemy directly with force. This attack is strong enough to hold Chinjao's strong headbutt which also creates a small shock-wave while clashing. This attack was first seen against Chinjao in Corrida Colosseum.The Blue Bird is a Belgian play.
Biken: Swan Lake (美剣 白鳥の湖 (スワン・レイク),Biken: Suwan Reiku?, literally meaning "Beautiful Sword: Swan Lake"): Cavendish does a flip over his enemies and attacks them from above. This attack was first seen against Donquixote's thugs. Swan Lake is a Russian ballet.
Biken: Zan t-Exupéry (美剣 斬・星屑王子 (ザン・テグジュペリ),Biken: Zan Tegujuperi?, literally meaning "Beautiful Sword: Slash: Stardust Prince"): Cavendish slashes the air in front of him which knocks his enemies away. This attack was first seen when Cavendish used it to carve a path spiraling up around the plateau on Dressrosa.Antoine de Saint-Exupéry was the author of the novel The Little Prince. The meaning of attack, the novel and Cavendish's epithet are puns, ending with prince.
Biken: Round Table (美剣 円卓 (ラウンドテーブル),Biken: Raundo Tēburu?, literally meaning "Beautiful Sword: Round Table"): Cavendish slashes his enemy in circle formation while he is spinning. This attack was first seen against immortal skull toys after one of them bit Farul. The "Round Table" is King Arthur's famed table in the Arthurian legend, around which he and his knights congregate. The Round Table is also a collection of English essays.
Precious Metal Axe (金の斧銀の斧 (プレシャスメタルアックス),Pureshasu Metaru Akkusu?, literally meaning "Golden Axe, Silver Axe"): While running, Cavendish takes a defensive stance, intercepting multiple attacks coming from his side. First used to protect Nico Robin and Trafalgar Law from Doflamingo's string bullets.The Golden Axe and Silver Axe, also known as The Honest Woodman, is a fable of Aesop.