【Materials】Surgical Stainless Steel (Medical-grade stainless steel) & Silicone 【Colors】Gold & Silver 【Size】Earring post diameter: Compatible with 0.62mm to 0.92mm (In rare cases, it may not stay in place if the groove on the post is shallow) ☆ The gold ones have gold plating. Please refrain from purchasing if you have sensitive skin or metal allergies. Thank you for viewing! Stamped with "Ochinkun 2" ① To put them on, simply insert them. ② To remove them, pinch and press "Ochinkun 2" with the pad of your finger. Be careful not to use your fingernails to pinch, as this may tear the silicone. ③ Then, just pull them out. ※ This is not a 100% non-falling earring back. ※ Not everyone will be free from allergic reactions. ※ The diamond earrings in the photo are not included. ※ This product is not subject to price reduction. Please understand. ※ If you would like multiple items, please inquire via comment beforehand (discount available). ※ Replacement silicone available (separate charge). ※ Will be shipped via "Yu-packet Post Mini". If you prefer, you can also change to "Nekopos". Please let me know in the comment section. (Both are anonymous shipping). ※ Returns and exchanges are not accepted after purchase. ※ Due to differences in monitor environments, the actual color of the product may appear different from the photos seen on smartphones and computers. Please understand. ※ I have put a lot of effort into writing this text. Please refrain from copying and pasting. ^_^; #EarringBacks #NonFallingEarringBacks #NonFallingEarringBack #OchinkunEarringBacks #LockingEarringBacks