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These adapters clamp on to the seat tube so you can use your braze-on derailleur on a conventional frame. Available in three common seat tube sizes with 20mm of vertical adjustability.
Good for any round seat tube of the right diameter (please measure) and all braze-on type front derailers (AKA the ones without their own band). Not for so-called direct-mount front derailers.
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Review Problem Solvers Braze-on Front Derailer Adapter Clamp
