1PREMIUM MATERIAL: The earring backs are made of 925 silver, non allergenic, non irritating, non fading, suitable for sensitive ears. 2PERFECT LOCKING: Replacement earring backs ensure comfortable wearing, earrings can be locked perfectly, always keep your earrings safe. 3WIDELY APPLICABLE: Secure and comfortable earring backs easily hold your earrings in place where you want them, thus you can enjoy all your dates and parties. 4EASY TO USE: Simply grab the earring backs and level the earring posts and push. It's very easy to use but very secure for your earrings. 5IDEAL GIFT: These earring backs fit most stud or drop earrings, 3 pairs in total for replacement and use, great gift to share with your family, friends, etc. 6 xEarringBacks