Body Candy Stainless Steel 3mm Blue Synthetic Opal BCR Captive Ring 16 Gauge 1/4" Gauge size 16 gauge; 1.2 millimeters 1/4 inch; 6 millimeter barbell diameter 316L stainless steel circular barbell BCR Features 3 millimeter blue synthetic opal captive ball BCR captive rings can be used for multiple body piercings