Assertion: electric toothbrush's brush head | /r/HasProperty | fixed
Facets:
Source sentences:
text: But it’s not all good news – while the batteries can be replaced, the brush head is fixed, so when the bristles wear out the whole unit has to go in the bin.
text: Sadly the downside with these is that the brush head is ‘fixed’ and the whole brush handle needs replacing each time.