this post was submitted on 27 Oct 2024
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bike wrench

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A place to ask bicycle repair questions, and for bike shop monkeys to share advanced non commercial wrenching resources (no YouTube self promotion). This is only for repair related topics.

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[–] [email protected] 1 points 1 month ago

That's to remove the casette from the freehub. You'll likely need a big hex key to remove the freehub from the wheel and it's going to be on tight. To open the freehub itself you might need another special tool for. I made one myself from an old socket that I ground away leaving just two opposing studs.