WP-TT&reg; 8MM RED DIY Leather Craft Decorative Turquoise Rivets Rapid Rivets Studs for Bag Shoes Bracelet Tandy Leather - 50 PCS Package Include: 50pcs Size: 8mm Material: Zinc Alloy Metal Suitable for All kind of art and leather Crafts And Clothes making All the gems are all artificial gems not natural gemstones.