Yantu Unisex 20pcs 18g Ball Circulars Horseshoes Eyebrow Lip Belly Rings Body Piercing Jewelry SIZE:18 GAUGE (1mm) Belly Ring,Rod diameter:8mm/0.31 inch Material: 316L surgical stainless steel & acrylic,Ball size 3x3 mm The ball of nose stud is independent and flexible, you may screw the ball if falls apart You will receive 20 belly rings of assorted colors(color Random delivery) 100% REFUND or RESEND to you if you are not satisfied with our product or any reasons