What are the wedges sticking out?
After screwing the clinsert (by hand or with a tool) until the pins reach the upper surface of the material. Depending on the size of the clinsert, such will have 2 or 4 wedges.
The next step is to drive/tap the pins into the parent material the with the installation tool.
The pre-assembled wedges, once installed provide with a positive mechanical lock that acts against rotation and vibration.