Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by process]
7. extraction tools

Anotations

Scope note:

Short cylindrical metal tools, with one end with a left-hand spiral flute and the other end with a pentagonal shaped head that can be inserted into a wrench or socket. Used to remove rounded-off or rusted bolts.