1mm Dot-Dash Ball Chain. Sold per 36 inch piece. Our Dot-Dash-Ball chain, is designed to send a message. Inspired by Morse Code messages, the slightly elongated link (dash) is a pleasant and subtle difference when compared to a standard ball chain. The chain is made from solid brass and electroplated nickel free. We love to string pendants or Charm onto this chain but have also used it in a tennis bracelet design with alternating strands of 2mm rhinestone chain.