Jewelry Specification: Material: ✨Design top is made of 925 sterling silver, plated solid gold. Nickel-free, waterproof. ✨Stone: High-quality 5A cubic zirconia — brilliant like a diamond, but more affordable. ✨Threadless Push-in Back: made in ASTM F136 titanium, safest material for piercings. Size: ?Back Thickness in 16G/ 18G/ 20G ?Back Wearable Length options: 5mm (short), 6mm(standard), 8mm(standard), 10mm(long). ? How to Adjust Your Threadless Jewelry Before Wearing To ensure a secure and comfortable fit, please adjust the pin before inserting the jewelry into your piercing: 1. Insert the pin about one-third to halfway into the bar. 2. Gently bend the pin slightly (using your fingers or flat tweezers). ➡️ A slight bend creates tension inside the post. ➡️ More bend = tighter fit | Less bend = looser fit 3.Push the decorative top all the way in until it feels secure. When removing, gently pull both ends apart. If it feels tight, twist slightly while pulling. ✨ This adjustment only takes a moment, but it helps keep your jewelry secure during daily wear. ? Tip: Test the tightness before putting it into your ear to avoid dropping small parts.