| 摘要 |
An adaptor and driver unit for rotatably inserting threaded anchors into a seating position in drilled holes in rock, masonry, concrete and the like, comprising a driver with a threaded hole on the lower end into which the upper end of a threaded anchor is releasably mounted, and an adaptor releasably attached to the upper end of the driver and being adapted to be connected to a power drive means. |
