Package: 100 pcs silver earring hooks for jewelry making with 100 pcs rubber earring safety backs. Sufficient for spare and replacement use. Material: Earring hooks are made of copper; earring backs are made of clear silicone, flexible and comfortable to wear, safe and non-irritating. Feature: Earring hooks feature a simple and delicate design with playful curves and dynamic styles. Move beyond standard hoop earrings and showcase a unique curved style on your ear. Suitable for most earring-wearing occasions. Function: Hypoallergenic ear wires provide more options for DIY earring projects. Rubber earring backs help secure your earrings during daily wear, reducing the risk of slippage. Application: Ideal for making earrings and DIY jewelry crafting projects. Use with other jewelry findings to create beautiful handmade jewelry or ornaments.