Use a hacksaw blade to make a groove, then stick a screwdriver in it. If you make 2 grooves you could use a Phillips for better torque.
Just had this happen to me on my front wheel - bolt was rounded off and couldn't release it. This worked great, thanks for the tip.
@Stallion started
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Just had this happen to me on my front wheel - bolt was rounded off and couldn't release it. This worked great, thanks for the tip.