This sterling silver necklace consists of a fine ‘box’ chain, made from small square links all connected to make a continuous smooth chain. It fastens at the center back with a round spring clasp, where it also has a short extension chain made from larger, regular round chain links. Strong, durable, and can be lengthened depending on your preference and outfit. A perfect chain to pair with pendants. Also check out Fine Textured Chain Necklace Sterling Silver.