This is the perfect set of extension chains to always have around.. 4 different lengths, 2 differnt colors of metal.. Simply clip the lobster claw onto one end of your your jewelry and use your jewelry's closure to attach to the chain to fit precisely as you wish. The 1 inch length is ideal to add just a bit of room to a snug fitting bracelet, while the longer lengths are better suited for necklaces... Every time you change your neckline, you can have the perfect length necklace to match. Detail