Urban Male Pack of Seven 16 Gauge 91.2mm) Surgical Stainless Steel Circular Body Piercing Barbells Body piercing circular barbell set made from stainless steel and acrylic 7 circular barbells in pack with all various colors included 16 gauge (1.2mm) bar, 12mm inside diameter 4mm diameter threaded screw fit balls Our high grade materials are tough, long lasting, won't mark your skin or tarnish over time