I've updated my design for the Dog ID Tag Holder. In addition to the floating split ring, I've added a solid brass swivel double loop which is incorporated into the cobra knot AND a solid iron split ring. These two things I feel add both additional security to your tags and allow them to swing a bit more freely.
As always, you should double check your tags and the rings periodically to make sure things are closed and secure.
![](https://img.etsystatic.com/isbi/4c409f/1397152530/isbi_fullxfull.1397152530_d06a7jca.jpg?version=0)