Saint Brigid of Kildare Ball Chain Necklace 2.4mm Stainless Steel Ball Chain with connector. 30" length Saint Medal Made in Italy. Metal Alloy, High quality medals. Size: 22×15mm (1″ tall) This is the same ball chain the US Military issues dog tag chain. #3 size dog tag chain has a 3/32" (2.4mm) bead diameter, is made of stainless steel and cut to a 30" length, including a connector attached to one end. PROUDLY manufactured in the USA!