Read from the World of Warcraft client build files.
How Deepfiend Spaulders Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Deepfiend Spaulders 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 223393 (223388 to 223398) were usually added in the same batch as Deepfiend Spaulders: the same quest line, zone, vendor or reward set.