Tongue Barbell Slave Door Knocker Open Captive Design with Bottom Color Ball Surgical Steel 14G Measures: 14G, 5/8" (16mm). Ball size: 6mm Material: Surgical Steel and Acrylic DELICATE 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.