10PCS Plated Round Hoop Earrings Spring Hoop Earring for DIY Jewelry Making. 【Material】: Made from brass with gold filled; Compared to normal earrings, high brightless, not easy to oxidize with good care 【Size Reference】: Outer diameter is 0.5"/13.5mm, loop size is 2mm, pin thickness is 2mm. 【Excellent Packaging】: These earring findings are sealed with a plastic bag and a plastic container to avoid missing, also can provide more convenient organization 【Wide Usage】: It’s a great gift for your girlfriend, mother, sister. Besides, the hole allows you to make some design, such as add a chain or a pendant, just like those in department store, but more meaningful.