Read from the World of Warcraft client build files.
How Crimsonscale Spaulders Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Crimsonscale Spaulders suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Crimsonscale Spaulders is part of the transmog set Jade Guardian'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 Crimsonscale Spaulders Fits
Other Items Named Crimsonscale Spaulders
2 other items in the current build are also called Crimsonscale Spaulders. 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 101933 (101928 to 101938) were usually added in the same batch as Crimsonscale Spaulders: the same quest line, zone, vendor or reward set.