I'm thinking foul play at the moment.
Read closely : no picture, no keyring re-sent.
The one that arrived in four pieces is bloody impossible.
Some people have only had part of it left inside the envelope. I stuffed them all myself.
I've also tried cracking them with my bare hands and had to tuse the edge of a table to do it.
My keyring has also lived in my pocket all day every day for the past 6-7 weeks and not had an issue. So its definitely been foul play.
For the people who have sent me images of the cracked keyrings, yours will be in the post tomorrow.
Cheers