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
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- Dropout hanger alignment tool
- Park Tool DAG-1
- Can be used to solve a multitude of derailleur shifting problems, most notably with index shifting systems
- Made of heavy-gauge steel and is chrome plated for long shop life
- Ensures rear derailleur hanger is parallel to wheel
- Mounts to hanger and measures distance to wheel
- Gauge arm also funtions as cold set correction tool
- Chrome-plated steel construction
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