| 摘要 |
<p>A handling button includes a grip part (1) which has an axial entrance channel formed as a stepped boring, in which into the expanded end (2) of the entrance channel can be inserted a fixture part (3) equipped with a head and whose shaft juts out at the narrow end of the entrance channel and whose head rests with its lower face against the step (5), such that in the expanded mouth (2) of the entrance channel a cap (6) can be inserted and cannot be lost or loosened.</p> |
