In both images, the white and silver rivets are both double cap speed rivets and a hand press was used to push them together. I can see from the image, this is an Allstar mask. The metal side piece, its a dead giveaway. OK, back to the rivets, the silver one, looks like they used a 7 or 8mm die press on a 12mm rivet, see the nice little ring around it? They both should be fine. If in doubt, take the mask to either BG or the Fencing Post and let them take a look at it.