| 摘要 |
The socket (15) has a drive component (40) so that it can be rotated by an engaging tool. The socket at its outer end is provided with a support fixture (70), with which it supports against the wall opening edge surface (7). The support fixture is driven by the socket in both direction in the socket axial direction. The support fixture is capable of rotating around the socket axis and can be inclined relatively to the normal plane to the socket axis. The socket has at least one through-hole through its wall permitting passage outwards of drill dust. The hole has the form of a generally axially directed slot which starts from the socket outer end. The support fixture has a central opening directed towards the socket opening, enabling an assembly plug (29) to be fitted. |
