WTF?! While working on JT’s Turner Five Spot, I discovered that the screws that hold the derailleur hanger on are SAE – at least the heads don’t fit metric hex keys. 3mm was too big, and 2.5 was almost spinning – 7/64”? It would suck to have to change the hanger on the trail and not have the correct hex key because it isn’t represented on a bike-specific multi tool or metric hex key set.
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