Description Earring back is simple in design and practical in use, give you a pleasant wearing experience. Made of premium material, safe and durable for use, skin friendly. These earring backs can be used for most pierced ear studs and earrings. Enough quantity for you to use. Features -Color:Transparent -Material:PVC, rubber -Size:0.40X0.40X0.30cm/0.16X0.16X0.12in -Size:0.50X0.50X0.50cm/0.20X0.20X0.20in -Size:0.50X0.50X0.30cm/0.20X0.20X0.12in -Size:0.30X0.30X0.30cm/0.12X0.12X0.12in -Size:0.40X0.30X0.30cm/0.16X0.12X0.12in -Earring backs are safe for your ears, and they also keep your earrings on tight. -They can easily slide onto the post and stay on the stable earring without losing it. -The simple style which is suit for most kinds of earrings and meet your needs. -Work great for earring back replacement and earring making, easily meet your different needs. -Earring Backs made from safe material, pliable and comfortable to wear. Earring backs are safe for your ears, and they also keep your earrings on tight. They can easily slide onto the post and stay on the stable earring without losing it. The simple style which is suit for most kinds of earrings and meet your needs. Work great for earring back replacement and earring making, easily meet your different needs. Earring Backs made from safe material, pliable and comfortable to wear.