Hypoallergenic Piercing Earrings:Flat back threadless push-in piercing studs are made from G23 implant-grade titanium.These 20G titanium nose studs are nickel-free,lead-free,non-tarnishing,lightweight,waterproof,reduces the risk of allergic reactions or irritation, making it ideal for sensitive skin Threadless Push-Fit Design---Easy To Use:Just slightly bent the pin of the titanium threadless helix stud around 20 degree then insert the top jewelry.No worry about studs fall off easily.It is comfortable to wear during sleep,shower or sports activities Post Thickness: 20 gauge = 0.8mm;Post Lengths:6mm and 8mm.Each pack includes one stud top,one 6mm post,and one 8mm post.Crafted from ASTM F136 titanium,with AAAAA-grade cubic zirconia gemstones.Ideal for various piercings including cartilage,helix,conch,tragus,lobe,rook,daith,labret,medusa,and nose Suitable for Any Occasion:The flat back piercing earring is unique and sincere product is beautifully packaged and ready for yourself,families or friends.A sensual surprise for any wonderful lady. A great gifts for mom,grandmother for Mother's Day,anniversaries,birthdays or wedding celebrations Customer Service:If you have any questions with limerencia titanium earrings,please don't hesitate to reach out us.We'll respond within 24h