[Proudy]

I have a rounded crank bolt and I have no I idea on how to extract it. This is on a Marin Rift Zone 1 with hollow cranks. If anyone has any good methods to help get it out Im all ears.
Thanks.

 

[LyNx]

Don't have a clue about the cranks on that bike, so maybe posting a link to said bike and/or a photo of the rounded bolt and cranks would let people help you.

 

[noapathy]

I find website for you that may help some.

 

[.WestCoastHucker.]

hammer in a torx bit, unscrew as required...

 

[fredcook]

+1 hammer and torx

or...

tap and die (if possible)

 

[TwiceHorn]

Its an FSA Comet.

 

[Millennial29erGuy]

Try a torx bit or an extractor like this https://www.homedepot.com/p/Drill-A...Vc__jBx0zNgmPEAQYBSABEgJGKPD_BwE&gclsrc=aw.ds

 

[Proudy]

Thanks for all the responses I will be sure to try them out.