
To extract a shaft which by accident or design has no head. If the shaft has snapped with nothing sticking out go straight to reverse thread taps. The remaining classes of extractor all require some protruding shaft in order to work correctly.

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Tissting Stud Extractor Broken Bolt Remover Heat Treated Alloy Steel Bolt Extractor Tool for 1/4in-1/2in (6mm-12mm) Rounded Studs Extractor