My apartment windows have this security bar that prevents the window from opening fully. It only opens about 6 inches right now. The leasing office said I could take the bar out, but they just can't do it for me due to some old law. So, I'm wondering how I would get these things out. I'm guessing I need to find a tool that fits the circle screw head in the pictures, but I don't know what kind of drill bit that is. I have an electric drill and full drill bit set, but nothing that fits that odd screw. I'm guessing it's an odd screw for a reason - they probably don't want you to take it out. Anyone ever seen anything like this? Any advice is really appreciated!