The game's collection data lists Grotesquely Writhing Bracers as sold by 2 vendor NPCs in Townlong Steppes and Isle of Thunder. The first vendor stands at 38.0, 64.6 on the Townlong Steppes map.
Vendor NPC, zone and position come from the client's collection source tables (CollectableSourceInfo and CollectableSourceVendorSparse); coordinates are the in-game map readout.
Build history
First seen in build 5.5.4.69585 (Mists of Pandaria).
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Grotesquely Writhing Bracers Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Grotesquely Writhing Bracers suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Grotesquely Writhing Bracers is part of the transmog set Spiritwalker's Regalia (Shaman only). The other 16 pieces:
2 other items in the current build are also called Grotesquely Writhing Bracers. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Grotesquely Writhing Bracers
Blizzard numbers items as they are created, so the named items next to ID 77257 (77252 to 77262) were usually added in the same batch as Grotesquely Writhing Bracers: the same quest line, zone, vendor or reward set.