These nickel finish domes with rivet backs are similar to the rivets used on buckles and D-rings, just taller and you know, dome shaped. The 10mm variety are just a hair wider than the 3/8ths inch standard rivet caps. They look great when done in single or double rows.

If you are unsure of the quantity of studs that will fit your strap, you may either inquire first, or order more than you think you need. I can refund an overage, but not charge more for extra (unless you make a new order, which is more complicated for both of us).