1.Model:Round Head Rivets Aluminum Solid Rivet Hardware & Fasteners. 2.Product Size: For example, M6*10 indicates a thickness of 6 mm and a length of 10 mm . Package Included: Size and quantity according to your choice. Notes If you need to buy more than one item, you can add a shopping cart first, there will be a bigger . Buying different products may result in unusual shipping fee. If the shipping cost is too high, please contact us. Picture is for illustration only, please select your requirements(Size ,Quantity). If you want to buy other size or any other number of packing products which have not in our store,Please contact us.