Feel the quality of ASTM F136 titanium with this Blue PVD Titanium Circular Barbell. Suitable formultiple types of piercings, this 16G barbell is internally threaded with 3mm and 4mm balls. Available in 5/16" (8mm) and 3/8" (10mm) inner diameters. Sold individually (1pc). Enjoy the perfect fit and a luxurious feel in any piercing.