| 摘要 |
The drilling tool 1 includes an elongate hollow shaft 2 with a proximate end 3 and a distal end 12. The proximate end is connectable to a drill and the distal end is connectable to a drill bit 5 so shaped and dimensioned that the drill bit forms a hole of a diameter greater than the maximum diameter of the shaft. The shaft includes an aperture 6 located at the proximate end of the shaft and an aperture 7 located at the distal end of the shaft. The shaft may include at least two disconnectable portions which may be via a screw thread and resilient sleeve locking means. The tool allows elongate members such as wiring, cabling or pipe work to be installed in or through a wall. |
