Park Tool DAG-2 Derailleur Hanger Alignment Gauge

The Park Tool DAG-2 check pin is made of special chromed steel to increase durability and has been designed to solve many problems of your diverter and, specifically, the indexed system of changes. The DAG-2 has a longer tester, (measuring point) bar and screwdriver for longer changeover pins that facilitate the alignment of a greater variety of bicycles. This tool Park Tool is extremely safe in its operation and easy to use. It has a screw directly on the change pin and the bar holds a tester that marks the distance to the wheel. For your use you must turn the tester with the wheel to positions 6, 9 and 12 of the clock, verifying any difference in the measurement. The results can be reviewed instantly.