Belly Button Ring Navel Piercing with Spike Silicone Ball The 14ga Shaft Measures 3/8"(10mm) In Length. Top Ball Measures 6mm And Is Externally Threaded. The Bottom Ball Is 10 mm with Brilliant Colors spiky silicone ball DELICATED LOOKING: Brilliant Outlook; Vibrant Color; Well Setting and Stay in Place. COMFORTABLE TO WEAR: Well Priced Piercing Set; With Expensive Looking; Comfort Fit Design; Easy to Put on and Won't Easy to Slip Off. Cute and Stylish Design, Firm and Easy to Use. Adopted Simple Design, Smooth Surface.