316L Surgical Stainless Steel Internally Threaded Barbell Tongue Nipple Ring 12G and 10 Gauge 7/16", 1/2", 5/8" and 3/4" Lengths available in 5mm and 6mm Balls. All of our Barbells are made from High Quality 316L Surgical Stainless Steel. Please Remember to Select the Gauge, Length and Ball Size you want from the Pull Down Menus.