Park Tool Derailleur Hanger Alignment Gauge
- The Derailleur Hanger Alignment Gauge can help solve a multitude of derailleur shifting problems, most notably with index shifting systems
- The DAG-2 is made of heavy-gauge steel and is chrome plated for long shop life
- A longer, narrower alignment boss to fit a wider variety of bikes
Park Tool DAG-2 Derailler Alignment Hauge