| 摘要 |
The apparatus has fixing slots, which are arranged at a drill with a retaining section in an axial direction. A stop unit (28) has an engaging structure (58), which is designed to engage in one of the fixing slots. The sides of the fixing slots are bordered by a stopper surface (32) running perpendicular to the axial direction. The engaging structure has a counter stopper surface (35), which interacts with the stopper surface. |
