A pair of two balls Studs Earrings, one ball is screw back. Description:Material: The earrings are made from solid 925 sterling silver, finest white gold/Yellow gold heavy plated silver, Nickel freeMeasurement: - Ball diameter options: 3mm; 4mm; 5mm;- Straight line length is about 7-10mm;Earring closure: The earrings closure is screw back.Color: Silver, Gold********************************The items come with jewelry pouch.