Rennsteig double edged screw extractors rennsteig werkzeuge 471 901 3 set of 5 double edged screw extractors from rennsteig ideal for the damage free removal of broken screws and bolts simply drill into the screw with the appropriate size bit tap the extractor into the hole and loosen the fastener suitable for use with right and left hand threads rennsteig 471 901 3 double edged screw extractor set of 5 metal case