Does anyone know what this tool is for? I found it while cleaning out a box of older bike parts. It's stamped with 'Shimano' in their corporate logo, but I don't see anything like it on their tech site.
For reference, it's about 3" long, and the hex looks to fit a 13mm bolt. I'm wondering what the other end could fit???
Mtbr's 2016 Winter Biking GearReviews and Roundups
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Thread: Mystery tool?