Merciless Gladiator's Dragonhide Spaulders

Source
This item is a PvP reward, and can be purchased for from:
 * in Champions' Hall
 * in Hall of Legends
 * in Tanaris
 * in Azuremyst Isle
 * in Nagrand
 * in Isle of Quel'Danas
 * in Netherstorm
 * in Blade's Edge Mountains
 * in Isle of Quel'Danas
 * in Durotar