against the frame/fork.as i understand itits to stop the caliper rotating around the bolt. so once its all nice and tight and centred properly, it doesnt wiggle out of plcae and have one pad hit before the other or constantly rubbing.
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against the frame/fork.as i understand itits to stop the caliper rotating around the bolt. so once its all nice and tight and centred properly, it doesnt wiggle out of plcae and have one pad hit before the other or constantly rubbing.