This is for one pair of brass 45 auto bullet stud earrings accented with Swarovski® crystals. The posts and metal backings are made from surgical steel. Each bullet earring measures approximately 12mm in diameter and each crystal measures approximately 5mm in diameter. Since real bullets are used manufacturers may vary and bullets may have unique markings on the casing from being fired. Dimensions listed are approximate. Sizes, colors, and other characteristics may slightly differ due to the handmade nature of our products.