Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. [tool and equipment components]
7. bits (tool components)

Anotations

Scope note:

Tools used to start holes or make shallow borings in wood. They are held by braces and consist of a sharp point (or threaded center spur), a projecting scoring edge, and a sharp lip for cutting away the wood inside the circumference.