Expanding dowel anchor bolt - has recess in head for engagement by drill used to drill dowel hole

摘要

The expanding pin (2) of an expanding dowel has a recess (5) in its head to interact with a drill tip (6). The drill used to drill the dowel hole can now be used to drive the dowel into the hole. The expanding pin can have a screw thread so that it can be removed by a screw driver if necessary. ADVANTAGE - Easier handling and faster fastening of work.