Thank you very much for viewing! Made with stainless steel, suitable for those with metal allergies. I'm an aromatherapist and I also do ear acupuncture jewelry ( ´ ▽ ` ) ◼︎Notes◼︎ ◎ Because these are handmade, there may be some glue overflow or slight misalignments in the parts. Please refrain from purchasing if you are concerned about this. ◎ Please use for 3-7 days for hygiene reasons. ◎ Please be aware that we are not responsible for any skin problems that may occur during use. ◎ If a part comes off, please reattach it with your own adhesive. ◎ We are not responsible for accidents or damage during shipping. Please purchase only if you understand that these are handmade products.