Vintage Sterling Silver Skull Head with hinged movable Jaw Biker Poison Locket Pendant Necklace. The skull measurements are shown in the photos. The back of the head opens up. This is not a tight sealing locket so its not water or air tight. It stays shut and would hold pills or other small items. The chain is 24 1/2" Long and is marked sterling as is the skull. Total weight is 44.2g. Very unique. Perfect Gift !