High Polished Scrub Stainless Steel Reversible Double Round Front Back Fireball Disco Ball Screw Stud Earrings Quantity: 3 Pairs / Order, Interchangeable Earring Set, Great Combination High Quality Stainless Steel, Nickel-free & lead-free, Hypoallergenic High Polished Scrub Stainless Steel Reversible Double Round Front Back Fireball Disco Ball Screw Stud Earrings Ball Size: 5mm and 8mm, Pin Thickness: 1.1mm (17 Gauge)