Ball Chain Spool 3.2 mm used for many applications, perfect for dog tags, keychain, beaded chains, badge chains, pull chain, industrial chain, retaining chain, plumbing chain, and many other uses.Well made and strong. They are easy to adjust the length to whatever you prefer. Adjustable in length -simply cut between the balls to fit your desired length and use the connectors to join ends of ball chain together to form loops. Bead diameter of 3.2mm large nickel plated steel included 30 pc matching 3.2mm connectors. Length:100 feet (33 yards) nickel plated steel ball chain spool