... etc 2.Sizes:m10-m36 or as required Din660 Round Flat Rivets1.Marterial: stainless steel,carbon steel,brass,aluminium etc2.Sizes ... .6.Garde of hardness:4.8,6.8,8.8,10.97.Packing:bulk packing,small box packing,gunny bag packing ... ,or packing according to customers' specification Din660 M10-M36 Round Flat Rivets (zinc plated,etc)