This lovely 24 inch black glass necklace has two adjustable ends 3 inch and 1 inch. It has a hook closure. This necklace has just been professionally restrung. Many of these older glass necklaces have string that is not strong. So you won't have any problems of breaking with this necklace. These are beautiful and gleaming black glass. It would be a wonderful accessory with any outfit. It is in excellent shape. For you from the crisp fall days of Kansas!