ROAD Bike Direct Mount Derailleur Hanger Shadow Rear Derailleur for Giant Cannondale Trek Tcr Propel Extender Protector|Bicycle Derailleur| - AliExpress
How can I tighten a loose rear derailleur onto the derailleur hanger? - Bicycles Stack Exchange
Shimano Officially Introduces Direct Mount Rear Derailleurs - Pinkbike
Amazon.com: shimano derailleur hanger
What type of derailleur hanger is this? Trying to install a Box Prime 9 eight speed cassette and instructions say it's not compatible with Shimano direct mount derailleur hanger. : r/bikewrench