Dormer M100 CSCT Screw Extractor No. 1 DORSE1 Carbon steel screw extractor, for extracting broken screws or studs by inserting the extractor into a pre-drilled hole & turning anti-clockwise. Size. No. 1. For screws 3
- 5 mm. (1/8
- 3/16 in.). Medium Tensile. DORSE1.