Product features
- The Hanger Genie is a folding precision tool used to realign rear derailleur arms and maintain precise shifting. It is compatible with all wheel sizes from 20˝ to 29˝+ and bolts directly into the shifter linkage hinges. The precision gauge can be locked in place so you won't lose measurement accuracy when you push it onto the wheel in different positions. With the tool's swivel base, you can easily clean the frame when you're working around the wheel.
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