1) Metalworking hand tool
Found on
https://www.crosswordclues.com/clue/screw-extractor
A screw extractor is a tool used expressly for removing broken or seized screws. There are two types; one has a spiral flute structure, which is commonly known by the trademarked name Easy Out; the other has a straight flute structure. The tools are made of very hard, brittle steel; they can break off inside the screw if too much torque is applied...
Found on
http://en.wikipedia.org/wiki/Screw_extractor
No exact match found.
