[Ace in the hole]

These are "buck" rivets. The rivet tool is similar to a punch tool. You back the rivet on a solid surface like a flat spot on a vise or something flat and hard, line up the tool on the other side and give it a good whack. The tool is made to mushroom the end of the rivet. Heres one- http://www.manestruckparts.com/store...Category_ID=22