These are some of our new Surgical Steel, reversible children's screw back earrings line, just arrived. With quality cubic zirconias, each pair has a polished ball screw back, which, when the earring is reversed, doubles as a plain ball stud for every day wear. Kids will love the versatility! The ball stud is great for school day wear, with the other side tucked out of the way behind her ear. Great value for hypoallergenic, screw back earrings!