... rivet 1.Material: Ss,aluminum, brass,steel 2.Size:2.4-6.4mm 3.Surface treatment:zinc nickel polishing Stainless steel ... 3.2 5,6,8,10,12,14,16,19 4.0 6,8,10,12,14,16,18,20 ... 4.8 8,10,12,14,16,18,20,22,25, ... , CopperTypeopen/close end, dome/flat headFinishingZinc plated, polishing, coated DIN&GB Standard Stainless Steel Blind Rivet