Keys & Lock Pendant on Chain Necklace Very Unique measuring as follows: The chain is 32" long, the large key is 3 1/2" long including the circle bale and just over 1" wide. The small key is 1 5/8"x3/4". The lock is 1 3/8" long and 3/4" wide. The little heart is 1/2"x3/4" and is slightly puffy. Very unique necklace in perfect condition.