Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Impaler's Girdle Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Impaler's Girdle suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Impaler's Girdle is part of the transmog set Mogu Lord's Regalia (Hunter, Shaman and Evoker only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Impaler's Girdle Fits
Other Items Named Impaler's Girdle
2 other items in the current build are also called Impaler's Girdle. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Blizzard numbers items as they are created, so the named items next to ID 144095 (144090 to 144100) were usually added in the same batch as Impaler's Girdle: the same quest line, zone, vendor or reward set.