In Wrath of the Lich King it is item level 272 and requires level 80. In MoP Classic it is item level 251, 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 Frost Witch's Grips Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Frost Witch's Grips suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Frost Witch's Grips is part of the transmog set Frost Witch's Regalia (Shaman only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Frost Witch's Grips Fits
Other Items Named Frost Witch's Grips
1 other item in the current build is also called Frost Witch's Grips. 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 50831 (50826 to 50836) were usually added in the same batch as Frost Witch's Grips: the same quest line, zone, vendor or reward set.