These earring backs are made of plastic, safe and soft, and can be used to make DIY earrings. It is made with craftsmanship and has practical functions, which can effectively stabilize the earrings and prevent the pain from wearing the earrings for a long time. This is a very simple and practical earring DIY material, which can bring you a good experience. Features -Color: As Shown. -Material: Plastic. -Size: About 1.00X1.00X0.10cm/0.39X0.39X0.04inch. -Choose , mild plastic production method, easy to wear, comfortable and practical. -You can hold the earring firmly and fix it in place to prevent the earring from falling off. -It can effectively help you relieve the pain of long-term wearing and give you comfortable wearing experience. -A sufficient number of earring spacers are included to meet your DIY manual needs. -It is made of craftsmanship and materials, light and practical, safe to wear, comfortable and durable, and adaptable. Package list: 150 x earring backs