Read from the World of Warcraft client build files.
How Galactic Gladiator's Plate Tasses Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Galactic Gladiator's Plate Tasses suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Galactic Gladiator's Plate Tasses is part of the transmog set Galactic Gladiator's Plate Armor (Paladin only), which the Appearances collection lists in 3 versions. The other 16 pieces:
Items Numbered Next to Galactic Gladiator's Plate Tasses
Blizzard numbers items as they are created, so the named items next to ID 255578 (255573 to 255583) were usually added in the same batch as Galactic Gladiator's Plate Tasses: the same quest line, zone, vendor or reward set.