Read from the World of Warcraft client build files.
How Moonshatter Wristguards Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Moonshatter Wristguards suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Similar Items
The 6 items nearest to Moonshatter Wristguards (item level 13) in item level among Armor > Plate, Wrist slot, from item level 22 to 23.
Blizzard numbers items as they are created, so the named items next to ID 240660 (240655 to 240665) were usually added in the same batch as Moonshatter Wristguards: the same quest line, zone, vendor or reward set.