Read from the World of Warcraft client build files.
How Cliffbreaker Helm Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Cliffbreaker Helm suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Cliffbreaker Helm is part of the transmog set Gatecrasher's Battleplate (Warrior, Paladin and Death Knight only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Cliffbreaker Helm Fits
Other Items Named Cliffbreaker Helm
1 other item in the current build is also called Cliffbreaker Helm. 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 101882 (101877 to 101887) were usually added in the same batch as Cliffbreaker Helm: the same quest line, zone, vendor or reward set.