This is a free-size ring. Size is adjustable. Round: approx. 6mm, 4.5mm Made with surgical stainless steel fittings, which are less likely to cause allergies. ‼️Important Notes (Please read carefully): ❗️Instant purchase without comment and silent transactions are OK. Please proceed directly to the purchase button. ❗️As this is a handmade product, there may be traces of handcrafting (such as wrapping or glue), and welding marks on the pendant head. If you are concerned, please refrain from purchasing. ❗️All products use actual items, and we try to photograph them as close to the real thing as possible, but the way they appear may differ depending on the device. Please check the product description and photos, and make your purchase after you are satisfied. We cannot accept returns or exchanges for reasons such as "it's different from the image." ❗️Occasionally, damage may occur during shipping. If you contact us before leaving a review, we will handle returns or repairs. We do not offer a lifetime warranty on accessories. Please consult with us regarding damage caused by your own use.