Some of the rivets have a much more spherical appearance. Just depends on their specific application. The rivets on the right are the ones included in the TPM Hero run, the rivet on the left is a spherical headed rivet.Interesting. To my eyes the AOTC greeblie is a tighter sphere than the rivets. I’ve handled a lot of them and the dome is much more gentle. The reflection on this thing looks like there would be a gap around the thing face on, and I kind of already see that in the second photo