Problem Solvers Braze-on Front Derailleur Adapter

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PROBLEM SOLVERS BRAZE-ON FRONT DERAILLEUR ADAPTER These adapters clamp on to the seat tube so you can use your braze-on derailleur on a conventional frame. Available in three commo n seat tube sizes with 20mm of vertical adjustability. FEATURES Front derailleur braze-on adaptor clamps for frames without front derailleur braze-ons. 20mm of vertical adjustability. Show more