Read from the World of Warcraft client build files.
How Spiritwalker's Grips Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Spiritwalker's Grips suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Spiritwalker's Grips is part of the transmog set Spiritwalker's Regalia (Shaman only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Spiritwalker's Grips Fits
Other Items Named Spiritwalker's Grips
2 other items in the current build are also called Spiritwalker'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 78762 (78757 to 78767) were usually added in the same batch as Spiritwalker's Grips: the same quest line, zone, vendor or reward set.