Materials: Silver, Stainless Steel, Silicone, Resin, Metal These are earring backs with a downward-prevention guard. The large guard prevents the earring post from pointing downwards, even with heavy parts, allowing you to wear your earrings beautifully! The metal parts are made of stainless steel, so they are safe for those with metal allergies. Silicone is included inside the back, fitting snugly on the post. The silicone resin uses a firm material, providing a secure and stable hold. You can use these as replacement backs for your existing earrings or for handmade creations. This item allows heavy earrings made with resin, etc., to fit securely on your ears. If you use pliers, etc., the silicone resin can be removed, and you can use them as regular earring backs. ● Gold-tone × 14 pieces Black-tone × 58 pieces ● Clear dish diameter: approx. 11mm, Back hole: 1mm (20G compatible)