Material: 316L Surgical Stainless Steel Gauge: 16G(1.2mm); Inner diameter:10mm; Crystal Ball size: 3mm Hypoallergenic and nickel free body jewelry Jewelry can be used for septum piercings, cartilage piercings and more. Package include:5pcs per pack(each color one piece as the picture) , come with one gift velvet bag. Description:This Nose Ring is constructed of high quality Surgical grade Stainless Steel. Simply insert the opening of the hoop through the nostril. Twist and turn through piercing until the flat disc on the end is resting against the inner part of the nostril. 316L Surgical Grade Stainless Steel. Due to the camera and the computer screen showing,the color will be a little different.Please kindly understand.