1. [ 1PC Piercing Stud ]: Sold as a Single Piece, each item package includes Marquise CZ Stud top × 1, 6mm post × 1, 8mm post × 1, Finger Cot × 2, and Store Box × 1. The piercing top is tiny. If you find it hard to put it on, please get in touch with us. 2. [ Suitable Location ]: Guage: 16G=1.2mm; Length: 5/16"=8mm & 1/4"=6mm. Threading: Internally threaded screw-on. Suitable for Cartilage, Tragus, Conch, Helix, Forward Helix, Flat, 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 Screw on flatback stud can swap the 6/ 10mm length or the top. 4. [ Feature ]: ASTM F136 titanium 18K Gold Plated and certified by SGS, suitable for fresh or healing piercings, Hypoallergenic, and 100% nickel-free, 5A Cubic Zirconia. 5. [ Great Idea ]: FINE4U piercing jewelry will be the new great idea for your friends and families on Anniversaries, Birthdays, Christmas, Valentine's Day, and Advent Calendar. FINE4U Titanium Cartilage Earring for Tragus Conch Helix Flat Labret 16G 6mm 8mm Screw on - ASTM F136 Titanium Flatback Stud, Internally Threaded Body Ear Piercing Jewelry (Green CZ)