The Wej-It ST14 setting tool assists in the secure installation of Wej-It drop-in anchors (sold separately). After the anchor has been inserted into the drilled hole, the smaller diameter of the setting tool inserts into the anchor and the back end of the tool is struck with a hammer (sold separately), expanding the anchor within the hole.Compatible Drop-In AnchorsWej-It ST Setting ToolCompatible Wej-It Drop-In AnchorsST12WD12, WDL12, WDS12, WDSS12, WDU12ST14WD14, WDL14, WDS14, WDSS14ST34WD34, WDS34, WDSS34ST38WD38, WDL38, WDS38, WDSS38, WDU38ST58WD58, WDS58, WDSS58 Wej-It Fastening Systems manufactures mechanical and adhesive fasteners for use in concrete and drywall. The company, founded more than 60 years ago, is headquartered in Norwalk, CT.