Bracers to the Death

Bracers of the Death are the best armor class boosting bracelets. They can be found.

In-game description
"Bracers of defense a.c.6: 'Bracers to the Death'. These bracers were held for a decades by an undefeated gladiator, and found extensive use in arena combat. The death of the champion marked the disappearance of this magical item, bur rumors persist that they are used to this day in competive combat across the lands."