These are part of a Bold lookalike matching set, every piece drops from Karazhan.

Iron Gauntlets of the Maiden: Maiden of Virtue
Eternium Greathelm: Opera Event (any)
Wrynn Dynasty Greaves: Curator
Mantle of Abrahmis: Netherspite
Panzar'Thar Breastplate: Nightbane
Ironstriders of Urgency: Nightbane