This lock ring can be removed and reset allowing the code to be changed. One of the recipients of this puzzle wanted to change the code so I reduced the diameter of the lock ring (keeping the same internal diameter) so it could be inserted and removed from the number wheels. Allowing the code to be easily changed.

Fits Macshay Cryptex : [https://www.printables.com/model/1498513-cryptex-no-support](https://www.printables.com/model/1498513-cryptex-no-support)