Park tool DAG-3 derailleur hanger alignment tool

Fix shifting issues and restore drivetrain precision with the PARK TOOL DAG-3 Derailleur Hanger Alignment Tool. A misaligned hanger is the leading cause of poor shifting and noise. This essential tool ensures your derailleur hanger is perfectly straight for crisp, responsive gear changes. Its precise, user-friendly design features a sliding indicator and rotates for clearance around frame components. Compatible with wheel sizes 16 to 29+, the DAG-3 offers a secure, flex-free connection for accurate adjustments. Invest in your bike´s performance and longevity