Have you tried looking on Amazon as they have something like this http://www.amazon.co.uk/...less-Cable/dp/B00416DLOQ (though not used one myself so can't comment on how robust it would be!). Up until last week I had my house keys etc on a metal chain that could be clipped to my belt....was great until my husband managed to break it (after me using them for over 15 years without any problems!). Somehow he managed to catch the clip between the seat in the car and then pulled it hard "as it was stuck"...something had to give and, unfortunately it was the link between the clip and the chain. I was not well pleased to say the least!!