Ball chain is made from spheres of metal joined loosely with connecting bars. Flanges inside the hollow bead lock the bar into place, but let it easily rotate around the join. Our 18" 1mm wide .925 sterling silver version is a sleek, supple, modern look for artisan-made pendants and custom charms. Comes ready to wear with a 5.5mm spring ring clasp and two closed jump rings permanently soldered to the chain ends with fold-over crimps. Note: silver chain is more fragile than steel or bronze in a similar gauge, so treat it with care to help avoid crushing or breakage. Charm pictured for illustration purposes only, and does not come with the chain. Stamped 925.