The system 6 locks are able to share the key combination with other products like the 8 pin octagon camatic and can also include products in the System 22 range. The very comprehensive system can be retrofitted to be useful in most cigarette vending machines that are use now and are updated constantly. The lock can use the 8 pin camatic radial pin tumbler mechanism that has the octagon system of improved security. When the operating keys are lost or a theft occurs, then the combination locks can be changed just by turning the Change key. This way, locks need not be replaced. Now unauthorized keys will not be able to open the lock, through key registration. The user is able to change the operator and change key numbers required thus avoiding the risk of keys that can go into wrong hands.