(1)Differrent head: dome head, countsunk... (2)Material: aluminium alloy, SS, ect (3)Sizes: 2.4, 3.2, 4.0, 4.8 (4)Sharp end (1)Differrent head: dome head, countsunk, et(2)Material : aluminium alloy, SS, ect(3)Sizes : 2.4~ 6.4. (4)Sharp endMaterialaluminium alloy, SS, ectSize2.4~ 6.4.Endsharp Aluminum Blind Rivet