Assertion: phillips screwdriver's head | /r/HasProperty | stamped with cold forming
Facets:
value: easily
type: MANNER
Source sentences:
text: In 1908, Canadian P. L. Robertson was the first to make the internal-wrenching square socket drive a practical reality by developing just the right design (slight taper angles and overall proportions) to allow the head to be stamped easily but successfully, with the metal cold forming as desired rather than being sheared or displaced in unwanted ways.