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Shimano 7 and 9 speed chains - which is which?

dmortondmorton Posts: 244
edited June 2012 in MTB workshop & tech
I currently have two bikes in bits, with 7 speed and 9 speed cassettes. Both have their chains off and stupidly I put both chains down next to each other.... now I don't know which is which. Both are Shimano HG. Is there an easy way to tell the difference?


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