Read from the World of Warcraft client build files.
How Ruthless Gladiator's Scaled Chestpiece Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Ruthless Gladiator's Scaled Chestpiece suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Ruthless Gladiator's Scaled Chestpiece is part of the transmog set Ruthless Gladiator's Scaled Armor (Paladin only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Ruthless Gladiator's Scaled Chestpiece Fits
Other Items Named Ruthless Gladiator's Scaled Chestpiece
2 other items in the current build are also called Ruthless Gladiator's Scaled Chestpiece. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Ruthless Gladiator's Scaled Chestpiece
Blizzard numbers items as they are created, so the named items next to ID 72378 (72373 to 72383) were usually added in the same batch as Ruthless Gladiator's Scaled Chestpiece: the same quest line, zone, vendor or reward set.