[Material] 1. aluminum rivet body / steel mandrel 2. stainless steel rivet body / nail core 3. aluminum rivet body / stainless steel mandrel 4. aluminum rivet body / aluminum mandrel 5. steel rivet body / steel mandrel 6. stainless steel rivet body / stainless steel mandrel 7. copper rivet body / stainless steel mandrel 8. copper rivet body / nail core 9. color rivets, customized according to the customer needs [Rivet brim shape] 1. Round head 2. big brim/large cap/ big cap brim 3. countersunk head