Like an earlier poster said...take the chain off the bike and toss it in the garbage. It is a cheap chain and will eat your sprockets. Buy a good quality chain like a Regina ORN6 and you will save a ton of money in the long run. I agree. The chain even looks cheap. As does the rear sprocket. Dumb question....Why O-ring chain? I keep my chains cleaned and lubed and I've never had a problem.