2.4mm semi-finished antiqued brass plated stainless steel ball chain, 30" long. Our semi-finished ball chain necklace is made in the USA and includes a ball-chain clasp on one end. Use the full 30 inches or cut the chain to your desired length. Simply slip the clasp onto the other end to finish your necklace. Ball chain is a popular option for making simple custom necklaces that display personalized charms (like letter charms and symbol charms expressing your personality).