Park Tool

PARK TOOL DERAILLEUR HANGER ALIGNMENT GAUGE DAG-2.2

The DAG-2.2 is used to both measure and straighten misaligned derailleur hangers solving a high percentage of shifting problems.


  • Gauge bar made of heavy gauge, chrome plated steel
  • Adjusts to fit 20" to 29"+ wheels
  • Replaceable threaded tip
  • Upgraded large inner shaft for added strength
  • Improved clearance and reach to fit more frame/hanger combinations including low clearance thru-axle derailleur hangers

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