crwdns2934241:0crwdne2934241:0 hardingj

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part to attach rear deraileur

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I have what I think is an early 70's Nishiki. There is a small washer like thing shaped like a half circle that helps hold the deraileur in place. I lost mine. Is it necessary, any idea where to get another or know what it is called?

Thanks

crwdns2866306:0crwdne2866306:0:

Nishiki Aero II

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open