This little plastic ring makes a big difference!
I update all my cable (I have done by myself some years ago) in order to replace all the old adhesive labels.
Now all the cables are very clear, and it's impossible to make mistakes!
I suggest to everyone that uses NEUTRIK connectors to spend a few cents to update all their cables.
You can put the ring in the "already solder" cables! It's fantastic! It's a little engineering jewel!