| 摘要 |
<p>A bit holder device is provided, with which a screw can be screwed into a work piece with a bit body inserted in a groove of the screw and the screw held so as not to be detached from the groove and where the bit body can be replaced without removing it from a chuck portion of an electric tool etc. Further, a bit holder device where attachment and removal of a tube body is facilitated is provided. In a bit holder device for rotating a screw with the head of a bit body inserted in a groove of a screw head and the screw held so as not to be detached from the bit body, the device has a tubular cover member detachably fitted on the bit body from the head side. The head of the cover member is a magnetic attaching portion magnetically attaching to the screw head, and the bit body projects from the head of the cover portion.</p> |
