This is the authentic Cape Cod bracelet made in Massachusetts by LeStage (not associated with Eden Hand Arts, the originator of the Dennis screwball bracelet). This style is all sterling silver. The quality is absolutely first rate unlike some of the less expensive imitations we have seen around the Cape; LeStage is an American company that stands behind its work since 1863! The center sterling silver ball unscrews to open and close the bracelet, and we stock it in all sizes. (Most women enjoy the size 6.5 inches, and men like the 7.5 or 8 inch styles. To insure best fit, just measure around the wrist at the most comfortable spot of your choosing and add a quarter to half an inch depending how you like to wear a bangle bracelet.) Another method of measuring, if this is a gift, is to measure the inside diameter of a bangle bracelet the person likes to wear, and multiply that diameter by pi (3.17) sIzes 5 and 8 are special order sizes and may take an additional 7 to 10 business days for shipping.