Ensure perfect gear shifting every ride with the DAG-3 Derailleur Hanger Alignment Gauge from industry-leading brand, Park Tools. This vital tool will rectify and diagnose bent or misaligned derailleur hangers, often the root cause of gear shifting issues.

Featuring an innovative, redesigned structure, the DAG-3 is the epitome of lightweight, versatility and accuracy. Its sliding indicator empowers you to measure derailleur hanger alignment against different sizes of bicycle rims. With compatibility ranging from 16 to 29+ wheels, adjusting your bike to perform at its peak is as simple as can be.

The precision-extruded aluminium body is crafted to exact standards and provides ample leverage for easy adjustments. Ingeniously, the device rotates out of the way to avoid seat stays, racks and other obstacles, allowing 360-degree measurement functionality.

Specifically designed for modern bicycles, the DAG-3 features a low-profile head, compatible with low clearance thru-axle derailleur hangers and Shimano® Direct Mount hangers.

As with all products in the renowned Park Tools range, this alignment gauge is made in the USA and is covered by Park Tools' legendary limited lifetime warranty.

To see the product in action, watch the video below: