S15 Series includes the perfect lobster clasps. From 4x7mm to 9x18mm - there's a size for everyone. This means they're great for finishing off a variety of sterling silver footage chains. Some of the clasps in this series include an open jump ring, making them super easy to connect to the last link of your chain! Still need a jump ring? Shop our selection of sterling silver jump rings. Lobster clasps have internal steel springs that allow them to stay tightly closed. Keep this in mind if soldering near the clasp – too much heat and the spring will lose its function.