FSA Fd-cp-baz Road Bike Front Derailleur Braze on Clamp Adapter 34.9mm Black for sale online | eBay
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Front Derailleur Clamp Adapter 28.6mm 29.6mm 31.8mm 34.9mm Braze on Degree For JAVA Minivelo Road Bike Folding Bike 2 Speed|Bicycle Derailleur| - AliExpress
Braze-on Adaptor Clamps | Shifters & Derailleurs | Problem Solvers
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34.9mm 31.8mm Super Light Alloy Mountain Bike Front Derailleur Braze on Adapter Folding Bicycle Front Derailleur Clamp Convertor|frame|bike cartoonbike frame clamp - AliExpress