Park Tool Derailleur Hanger Alignment Gauge (DAG-3)

About Park Tool Derailleur Hanger Alignment Gauge (DAG-3)
An alignment gauge is essential for diagnosing and repairing bent or misaligned derailleur hangers, often the source of shifting problems. The DAG-3 features an all-new design, engineered and built to be light, accurate and versatile. The sliding indicator can measure derailleur hanger alignment against bicycle rims of any size, and rotates out of the way to clear seat stays, racks, and other obstacles, allowing 360 degree measurement. The long, precision-extruded aluminum body is built to exacting tolerances and provides ample leverage for making adjustments.

Features
Compatible with 16" to 29"+ wheels (ISO/ETRTO rim sizes from 317 to 630+)

Replaceable M10 threaded tip

Low-profile head fits low clearance thru-axle derailleur hangers and Shimano® Direct Mount hangers

Length: 16.5” (420mm)

Weight: 22.75 oz. (645g)

About Park Tool
Park Tool are the world's largest bicycle tool manufacturer. Located in St. Paul Minnesota they have been designing and manufacturing bicycle specific tools since 1963. Their dedication to quality and innovation have gained them the reputation for producing the best bicycle tools in the world.