1Made of high quality material， these screws and rivets are durable and sturdy. 2Plated surface give these screw rivets a beautiful color. 3The surface is quite smooth and comfortable to touch，exquisite workmanship and delicate. 4There are total 20 pieces rivets that you may use for many projects. 5Rivets are perfect accessories for craft-making such as DIY albums or books.Features:1. Made of high quality material， these screws and rivets are durable and sturdy.2. Plated surface give these screw rivets a beautiful color.3. The surface is quite smooth and comfortable to touch，exquisite workmanship and delicate.4. There are total 20 pieces rivets that you may use for many projects.5. Rivets are perfect accessories for craft-making such as DIY albums or books.Specification:Item name: RivetMaterial: iron nickel platingQuantity: 30pcsProduct size: (diameter D * length L)M5 * 16， D=5， L=16M5 * 18， D=5， L=18M5 * 20， D=5， L=20Type: M5 * 16， M5 * 18， M5 * 20 (optional)Package list:20 * Screw Rivets