1. [ Size and Package Included ]: 16G(1.2mm); Length: 5/16"(8mm) & 1/4"(6mm), Cluster CZ Stud top × 1, 6mm post × 1, 8mm post × 1, Finger Cot × 2, and Store Box × 1. 2. [ Suitable Location ]: Cartilage, Conch, Tragus, Helix, and Lobe. 3. [ Replace ]: If you bought the piercings in FINE4U JEWELRY, you can replace the top or post in the same gauge and the threading. e.g: 16g 8mm internally threaded flatback stud can replace the 6/ 10mm length or the top. 4. [ Feature ]: ASTM F136 Titanium and certified by SGS, internally threaded, Hypoallergenic, and 100% nickel-free, 5A Cubic Zirconia. 5. [ Great Idea ]: It will be the new great ideas for your friends and families on Anniversaries, Birthdays, Christmas, Valentine's Day, and Advent Calendar. FIND THE BEST JEWELRY FOR YOU ABOUT FINE4U Last 13 years, we have focused on designing and manufacturing body jewelry and fashion jewelry, each piece of Jewelry represents FINE4U's pursuit of material and craftsmanship. WHAT BODY PIERCING JEWELRY DO WE HAVE?  Belly Botton Rings (for Navel) Straight Barbell (for Nipple, tongue, industrial piercing) Curved Barbell (for Eyebrow, Navel, Tragus, Daith, Helix, Orbital, Rook, Ashley) Ring Hoop (for Nose - Septum, Nostri; cartilage - Tragus, Daith, Helix, Orbital, Rook, lobe) Flat Back Stud (for cartilage - Conch, Orbital, lobe; Mouth- Labret, Madonna, Medusa, Monroe, Snake Bites) Nose Stud/ Screws  - Including these but more How to choose the size？ 1. you can measure your Nipple, ear, nose, or other position's thickness. 2. If your piercing is fresh, you need to choose the larger size. 3. choose the perfect size after your wound has healed (about six months). Tips: If you found that the FINE4U body jewelry is hard to unscrew the thread, you can use your clothes or other Strong friction fabric or silicone fingertips to open it.