Size:0.2mm water drill, rod thickness 0.7mm, rod length 7mm This basic L shaped nose rings for women measurement: 7mm wearable length and prong set cubic zirconia measures 2mm in diameter. Made of 316L surgical steel, high polished. 316L steel is the most basic metal used in body jewelry. It is the basic requirement of metal to be used in initial piercings and for healing. For most people this grade of steel works just fine. Include 20pcs 3 mm nose studs. Easy to clean and to take in and out. When you can't wear your facial piercings at work, these nose studs will make it easy to wear on the weekends and days off These basic l nose rings are also a sparkly gift to friends on Birthday, Christmas, Wedding, Valentines Day,etc.