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A chain that rubs? A sluggish derailleur? The Dag-2 derailleur hanger straightener from Park Tool is essential for perfectly adjusting your derailleur.

Derailleur hangers today are very flexible and can shift over kilometers, during transport or a fall, thus misaligning your derailleur.

Very precise and easy to use, this Dag-2 tool from Park Tool will allow you to achieve a centered derailleur hanger, necessary for smooth gear changes.

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