Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Confiscated Manacles Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Confiscated Manacles suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Confiscated Manacles is part of the transmog set Parent Chain Set (Hunter only). The other 9 pieces:
Blizzard numbers items as they are created, so the named items next to ID 142138 (142133 to 142143) were usually added in the same batch as Confiscated Manacles: the same quest line, zone, vendor or reward set.