Lipped Drop In Wedge Anchors

Internally threaded expansion anchor for use in concrete.
Two versions - lipped or standard. (These are lipped)
The lipped version prevents the anchor being pushed too far into the hole during installation.
Drill the correct size hole, clear the hole, place the anchor in the hole, set the anchor with the setting tool, secure the workpiece with a suitable sized bolt.
Metric coarse threads, can be used with most types of bolts with matching threads.