Other reviews are also correct, these do not hold their shape. I thought maybe the token for the collar would be different. I was able to attach it to the collar with no problems, but after attaching the dog tag the ring stretched and would not return to its original shape. Also, they were difficult to stretch in the first place because they're quite thick, but that doesn't add to the strength at all. I had to send the whole package back. I'm still looking for the smaller black ring for the brand.
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