Updated: Aug 17, 2019
There are 2 sets of keys for the bank safe deposit box lock, 1 set of customer keys, usually 2 pieces, which are kept by the customer, 1 set of public keys, which are kept by the safe deposit box rental unit. When opening the safe deposit box, 2 sets of keys are required to be inserted into the lock hole.
If the customer key is lost, the professional needs to use the destruction tool to force the lock to be broken and replace the new lock. Of course, the customer needs to bear the cost of labor and locks caused by the loss of the safe key. The specific amount is subject to the signed agreement!
Refer to the following video for the way the lock is broken!