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Ensures the right shape: the DAG-2.2 Derailleur Hanger Alignment Gauge by ParkTool
A large proportion of shifting problems are due to a bent derailleur hanger. The DAG-2.2 has a longer gauge bar, an extended threaded mount and a narrower distance gauge that can be used for several bicycles.
The DAG-2.2 is screwed into the derailleur hanger instead of the rear derailleur, a caliper is used to measure the distance to the rim (of course exactly trued) in various positions, deviations can be corrected immediately by bending slightly. Extra-tempered, chrome-plated steel guarantees durability and precise measuring results.
- 1 x ParkTool DAG-2.2 derailleur hanger alignment gauge