Double cap rivets Size: 6mm Post Length x 8mm Cap. 5mm, Post 6. Dritz 8mm x 6mm Double-Cap Rivets, 24 Sets, Brushed Brass . Double Cap (24) Rivet Cap (7) Split (14) Split Rivet (8) Tubular Rivet (1) Clear. 6 out of 5 stars 296 $11. Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Showing all 6 results Sorted by popularity Feb 3, 2023 ยท These are the most common types of leather rivets: Single cap rivets: Thin rivets with a singular post and a slightly domed cap. Many types of double cap rivets avail. If you want a heavier duty rivet you can choose one with a double cap. Both caps are 1/2" in diameter. When only the best will do, these nickel free rivets offer the finished look that only double cap rivets can. htavyktxkegkpljcigklxihjicpjliuywtbrwpftoqmotuqsluhwaokglfvhrkbtbyukczwtxiy