Split Trunk Rivets are made of brass plated stamped steel. Trunk rivets are sold in lots of 50 rivets. Available in 4 Sizes: 1/2", 5/8", 11/16" and 7/8". Rivet Cap is 3/8" in diameter. Please choose your desired length. Please let us know if there is a type of trunk hardware that you would like to see on our site!