How to Align a Derailleur Hanger Using the DAG-2.2 - YouTube
Use DAG1 Tool to align a rear derailleur hanger
Dave Moulton's Blog - Dave Moulton's Bike Blog - Aligning a bent derailleur hanger
Gear hanger alignment tool - DIY version - Singletrack World Magazine August 19, 2016
Julien Morand on X: "DIY rear derailleur hanger alignment tool. Cost only $2.17. instructional video available here: https://t.co/Wg1bAZPQls. #gcnhack https://t.co/SnH3MIG354" / X