This is a pair of cipher rings, which can be used to make Thieves Cant or other in-game ciphering more engaging! To use, line up the two rings however you like, but take note of one pair of letters / symbols. This is your "key", which you can provide to re-align the cipher the same way later. You can create a message with the symbols using that pairing, and allow a player to unlock it using the provided key in whatever way best fits your game. These are printed in marbled PLA and shipped directly to you from a 3D printing facility.