These hoop earrings feature a beautiful screw chain simply connected. The hoop type gives a piercing-like appearance because the hardware is less noticeable compared to screw-back earrings. To wear, pull the hoop's clasp (like a catch) to open it, and then clip it onto your earlobe. They don't hurt, yet they feel secure (the snug fit provides a sense of security!), and the overall comfort as earrings is quite good! Hoop Hardware: The part that touches the ear: Surgical stainless steel 316 This material is suitable for those with metal allergies. Other parts: Surgical stainless steel 304 Nickel-free Diameter: 13mm, Thickness: 1.5mm All surgical stainless steel The third photo is an image of the series. (Sold separately) This is a handmade item. Please see the profile for more details. Recommended for those who like jewelry from brands like 4℃, ete, agete, AHKAH, Papillonner, and NOJESS, those with metal allergies, and those who appreciate the styles of Urban Research, TODAYFUL, Ron Herman, Rose Bud, IENA, Ships, Spick & Span, Zara, MUJI, GU, vintage clothing, and antique jewelry.