Amazon.com: Black Bike Rear Gear Mech Derailleur Hanger with Bolt Fitting Metal Tailhook Dropout Adapter for MTB Bicycle Replacement Parts : Everything Else
Venzo Road or Mountain Bike Bicycle Adjustable Braze On Front Derailleur Adapter Clamp 28.6mm, 31.8mm or 34.9mm - Compatible with Shimano Sram Black 31.8mm Ver.1
Tern Rear Derailleur Adapter | Tern Intl Gear Store
1pc Bike Rear Gear Mech Derailleur Hanger Dropout Adapter with Bolt Parts - Walmart.com