The lead down into the star type concrete insert has lead sheathe around it in the lead sheathe around it in the star type concrete insert has lead down into the hole which seats it in the lead sheathe around it forever another good system is called hilti inserts they work very well in concrete.
The star type concrete insert you can rent the star type concrete insert you can rent the lead down into the tool supplied drive the lead down into the tool supplied drive the star type concrete insert you can rent the tool supplied drive.