How to remove the license plate bracket?

[vishnumrao]

I received my plates from the DMV a week ago, but I can't figure out the exact screw type used on the gravity license plate bracket. Please see attached. Any thoughts on what this is?

 

[ke2]

That's a Torx wrench. Probably a T10 sized

 

[Pragmatic]

Inverted Torx.

 

[prgarg]

Inverted Torx.

Not sure if that's an insult or a wrench