Shimano DuraAce CS7900 Ultegra CS6700 10Speed 11t 1st Position Cog B
$16.88
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Dura-Ace/Ultegra 10-Speed CogBrand: ShimanoModel: 3890Length: 1.79Width: 1.79Height: 0.35Weight lb: 0.5Part Number: Y1Z81100DBarcode: 689228165762
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