It is a IR 231c.
I have never tried any of the drill bit screw extractors, are these effective on bolts as large as this? If I understand the process, you drill in reverse into the bolt head, and at some point the bolt loosens and comes out. Is this correct?
I have never tried any of the drill bit screw extractors, are these effective on bolts as large as this? If I understand the process, you drill in reverse into the bolt head, and at some point the bolt loosens and comes out. Is this correct?