Premium Material: These hypoallergenic earring hooks are made of silver/gold-plated copper, The material is very safe and -free exquisite workmanship, smooth and bright , not easy to fade, the back of the earring is made of transparent silicone material, soft and comfortable, safe and no reaction to sensitive skin Complete 600-Piece Set for Custom Earring Designs: set includes 200pcs earring hooks for jewelry making with 200pcs 4mm clear rubber earring backs and 200pcs 4mm jump rings, enough spare to use for a long time. Perfect for DIY earring designs, repairs, or bulk jewelry production. No need to purchase components separately, perfect earring kit for beginners Elegant Design: These craft earring findings conforms to ergonomic design, light weight, have exquisite polishing, enjoy beautiful curves and dynamic styles,show the curve style on your ear, suitable for almost all occasions where the earrings are worn Wide Application: These fish hooks are suitable for most earring projects. You can use them with your favorite jewelry accessories, easily attach jump rings, beads, chains, leather, charm or pendant. Making different styles earrings for for everyday wear or any special occasion Great for Gift: This DIY ear hook kit is suitable for beginners or experienced handmade enthusiasts. You can give this ear hooks jewelry as a gift to friends, family, and make your own earrings together, which enhance the relationship between you