In Wrath of the Lich King it is item level 245 and requires level 80. In MoP Classic it is item level 225, requires level 80 and sells to vendors for 1c.
Read from the World of Warcraft client build files.
How Valorous Worldbreaker Shoulderguards Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Valorous Worldbreaker Shoulderguards suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Valorous Worldbreaker Shoulderguards is part of the transmog set Valorous Worldbreaker Regalia (Shaman only). The other 16 pieces:
Items Numbered Next to Valorous Worldbreaker Shoulderguards
Blizzard numbers items as they are created, so the named items next to ID 45415 (45410 to 45420) were usually added in the same batch as Valorous Worldbreaker Shoulderguards: the same quest line, zone, vendor or reward set.