I was looking for a screwdriver with a "Y" or "U" shaped tip (see attached image) for a screw that I have encountered in 2 different power outlets so far.

I assume they put this screw in the power outlets to prevent someone without the necessary technical knowledge and safety specifications from touching it.

I did my job with this screwdriver and it also helped me with other electronic tasks. Its case is like a small wallet, so it doesn't take up any space.