Shackle Key

Were you looking for:
* The Shackle Key (Stranglethorn Vale) for the quest Mukla's Demise?
:–OR–
* The Shackle Key (The Hinterlands) for the quest Recover the Key!?
:–OR–
* The Shackle Key (Frostfire Ridge) for the quest Assault on Stonefury Cliffs?
:–OR–
* The Shackle Key (Revendreth) for the quest Rubble Rummaging?