All of the stud earrings are crafted from implant-grade F136 titanium, free from nickel and lead. Titanium boasts outstanding hypoallergenic and biocompatible properties, ensuring it won't irritate or harm the skin. It's safe for individuals with sensitive or allergic ears to wear all day long with confidence. Titanium metal is also lightweight, waterproof, corrosion-resistant, and non-fading, meaning these G23 titanium earrings are durable and of excellent quality. Whether worn personally or given as a gift to mothers or friends, they are an excellent choice. These dainty and small titanium studs come in various styles, featuring AAAAA-grade cubic zirconia that sparkles like diamonds. The metal surface is highly polished with no burrs, making them comfortable and easy to wear. Post gauge: 20G (0.8mm), Post Length: 11mm, packaged as a pair of titanium earrings suitable for earlobes, cartilage, helix, and other areas. Please refer to the model's wearing effect for the size of the studs. Limerencia is a professional company specializing in designing, manufacturing, and selling high-quality titanium jewelry. If you have any questions, please email us. We'll reply within 24 hours and are eager to hear your thoughts.