SRAM Braze-On Front Derailleur Adapter - Components
Front Derailleur Clamp Adapter 28.6mm 29.6mm 31.8mm 34.9mm Braze on Degree For JAVA Minivelo Road Bike Folding Bike 2 Speed - AliExpress
Origin8 Braze-On Front Derailleur Adapter - Portland Bike Shop | River City Bicycles
Amazon.com: Black Bike Rear Gear Mech Derailleur Hanger with Bolt Fitting Metal Tailhook Dropout Adapter for MTB Bicycle Replacement Parts : Everything Else
CL-FD Front Derailleur Adapter Braze-On to Clamp 28.6mm | eBay
Venzo Adjustable Braze On Front Derailleur Adapter Clamp for Shimano Sram | eBay