A bit of a story here. I found it in Hong Kong, and since there was no goal attached, I took it with me. It was OK going through security in Hong Kong, but when I got to transfer from Frankfurt to Munich, they decided that it was a dangerous weapon, and I couldn't take it with me. And since my main bag was checked through, I couldn't put it in there. So sorry - the chainring has ended its journey in Frankfurt as a potential hijacking tool. I kept the tag - please let me know what you want me to do with it.