In the Appearances collection, Burnseal Bracers is listed as Boss Drop. Appearance ID: 21466. 15 other items wear the same appearance; 10 of them are listed here.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Burnseal Bracers Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Burnseal Bracers suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Blizzard numbers items as they are created, so the named items next to ID 105787 (105782 to 105792) were usually added in the same batch as Burnseal Bracers: the same quest line, zone, vendor or reward set.