Package: 12Pcs nose rings hoops and 24Pcs nose studs in a Set,As the picture showsSize:All Gauge--18G(1.0mm);Bar length:7mm; inner diameter:5/16"(8mm), 3/8"(10mm), 1/2"(12mm)Material: High Quality Surgical steel, durable and hypoallergenic, completely non-corrosive, lead and nickel free. Also resistant to acid, alkali, no fading, no distortion, suitable for sensitive bodyThese body piercing jewelry set is adorable for women and men. Easy to insert and take off. Best gift for Birthday, Christmas Day, Anniversary Day, Valentine's Day, Wedding and moreGeneral Size for Wearing,Suit both Men and Women.