In Wrath of the Lich King it is item level 226 and requires level 80. In MoP Classic it is item level 200, requires level 80 and sells to vendors for 1c.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Heroes' Earthshatter Handguards Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Heroes' Earthshatter Handguards suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Heroes' Earthshatter Handguards is part of the transmog set Heroes' Earthshatter Regalia (Shaman only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Heroes' Earthshatter Handguards Fits
Other Items Named Heroes' Earthshatter Handguards
1 other item in the current build is also called Heroes' Earthshatter Handguards. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Heroes' Earthshatter Handguards
Blizzard numbers items as they are created, so the named items next to ID 39591 (39583 to 39596) were usually added in the same batch as Heroes' Earthshatter Handguards: the same quest line, zone, vendor or reward set.