Don Julio's Band

Don Julio's Band is a ring that gives the wearer a bonus to stamina, chance to critical strike with weapons, and chance to hit. This item was possibly made by or made for Don Julio.

Source
Don Julio's Band is sold for by one of the Supply Officers for Alterac Valley:
 * Gaelden Hammersmith in Alterac Valley
 * Thanthaldis Snowgleam in Alterac Mountains
 * Grunnda Wolfheart in Alterac Valley
 * Jekyll Flandring in Alterac Mountains