First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Related
Constricting Chain Harness Game Data
Appearance
In the Appearances collection, Constricting Chain Harness is listed as Boss Drop. Appearance IDs: 27265, 27281. 9 other items wear the same appearance:
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Constricting Chain Harness Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Constricting Chain Harness suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Constricting Chain Harness is part of the transmog set Armor of the Skyfather's Chosen (Hunter, Shaman and Evoker only). The other 16 pieces:
Blizzard numbers items as they are created, so the named items next to ID 137460 (137455 to 137465) were usually added in the same batch as Constricting Chain Harness: the same quest line, zone, vendor or reward set.