This bracelet was made to pass some time and to give an idol mind something to do. The coil that you see in the center is made from 18G copper wire that has been coiled. The chain is made from copper rolo chain with hand made copper jump rings that have been soldered to prevent breakage. Everything on this is 100% copper with a satin finish achieved by adding a patina to turn copper black and than tumbling for approximately 5 hours. The bracelet fits a wrist that is 7 and 3/4" with a lobster clasp for closure.