MaterialEarrings posts is made of plastic, earring backs is made of rubber, sturdy, durable and easy to use which can keep a long time Safe and comfortable, these earrings and earrings are made of rubber and are less likely to cause an allergic reaction, They are flexible and lightweight The package includes50 flat studs and 50 earplugs, A total of 50 pairs are perfect for your needs, and for health reasons you can change them every day Clear earring post cup diameter: 3 mm, earring post pin size: 11 mm long, 1 mm thick, a large number to meet your different needs DesignEarring posts and backs are come with blank pin and cup design, very pretty, easy and convenient to take on and off With transparent earrings, the earrings and backs of these earrings are simple and clear, so you can wear them as regular earrings to keep your ears open and cover your work, school Easy to wearYou just need to remove the earring backs stoppers and carefully insert them into the ear holes, will not hurt your body Note: disinfect them before wearing them on the ears small parts, not suitable for children under 12 years old ApplicationPlastic earring studs apply in daily earring making, imitation pearls and other objects to make your own earrings DIY stickers, you can paste some beads, artificial pearls and other items to make your own earrings Multi functional transparent earrings and silicone rubber earrings are designed for men, women and adults