Material: 316L Surgical Steel and High Quality Acrylic,Hypoallergenic and nickel free body jewelry. , Delicate and Elegant. Excellent External Screw Thread, Firmly Screw on and Flexibly Screw off. , Gauge: 16G(1.2mm), Bar Length: 8mm, Ball Size: 3mm, CZ Size: 2mm, 2.5mm, 3mm. , Package include: 10PCS per pack(10 pcs steel bar, 10 pcs clear plastic bar) , come with one free gift velvet bag. , We promise within 90 days unconditionally money back guarantee, if you are not satisfied with our products.