Package: 100 PCS silver earring hooks for jewelry making with 100 PCS rubber earring safety backs stoppersenough for your spare and replacement . Material: Earring hooks are made of copper and earring backs are made of clear silicone, pliable and comfortable to wear, safe and no reactions . Feature: earring hooks is simple but delicate, enjoy playful curves and dynamic styles, step out of the standard hoop earrings and show a curvy style on your ear, suits for almost every earring wearing occasions . Function: Hypo-allergenic ear wires hooks will give you more choices to DIY your own earrings, rubber earring backs to assist your daily earring wearing, no worry about the earring slipping issues . Application: Ideal for your making earrings, DIY jewelry making crafting projects, use them with other jewellery findings to make fascinating jewellery or beautiful ornament .