This sticker is a set of two small stickers 1 1/2 inch square each set in a black circle.
This sticker is actually two stickers in a standard type sticker format with adhesive on the back rather than on the front.
It actually comes in a square cut, but you can cut it away with scissors if you want just the 2 skulls in black circles.
SEE ALSO THIS SAME STICKER IN FULL SIZE THAT GOES ON THE INSIDE WINDOW.