my dura-ace steel single chainring bolts have a serrated edge similar to the pic, but more teeth/less severe. Mind I have no trouble holding them still with my makeshift chainring bolt tool, an old disk brake pad :)
@_imMe started
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my dura-ace steel single chainring bolts have a serrated edge similar to the pic, but more teeth/less severe.
Mind I have no trouble holding them still with my makeshift chainring bolt tool, an old disk brake pad :)