Wolf Tooth RoadLink Derailleur Hanger Extension – Wolf Tooth Components
How to install a rear derailleur hanger - YouTube
Amazon.com : Index Bicycle Derailleur Hanger Plate with Nut and Bolt Adapter Shimano Compatible : Sports & Outdoors
Bike build help! Is this shimano 105 r7000 derailleur correctly attached to this hanger? The B link thing is confusing (Bike frame is vintage racer frame from early 90s) More details in
Standard Mount vs. Direct Mount Derailleur Hangers
Wheels Mfg. gives UDH bikes a direct-mount hanger for Shimano derailleurs - Bikerumor
Direct Mount Derailleur Hanger Shimano Trek Specialized Giant Canyon Cannondale | eBay