Small carabiner is a nifty little tool to clip on your name tag for easier swapping between multiple collars, (or if you have a tag collection). Also you can use this if your name tag has a hole instead of a hook and you wish it would face forward.
!!! Please note - the small carabiner might not fit over all D-rings, choose it for small collars only.
If you choose the S-biner then I will hook it right into the name tag, and you won't have the extra ring.