Assertion: curtain's grommet | /r/CapableOf | make of rubber
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Grommets made of rubber or other elastic material are also used to minimize the transmission of vibration.
text: Grommets are generally flared or collared on each side to keep them in place, and are often made of metal, plastic, or rubber.