Shimano Front Derailleur Clamp Band Adapter | 34,9 to 31,8mm | SM-AD17
Universal Cycles -- Shimano Front Derailleur Band Clamp Adapters [Y5P198030, Y57Y98040]
New Shimano DURA-ACE Di2 Front Derailleur Clamp Band Adapter 28.6/31.8 Braze-On 689228746411 | eBay
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