White-plated brass bell end for ball chain. Unlike most types of chain, ball chain does not contain any open links. Instead it's made of metal spheres (balls) that are linked at regular intervals with connector bars. White-plated components are generally grayer, but also more durable, than silver-plated components. (White plating is also known as "imitation rhodium" and "silvertone".) Fits 1.8-3.2mm ball chain. Used at the end of lamp-pull strings and to keep beads on the end of ball chain.