Any portion of a necklace, bracelet, or other piece of jewelry that attaches to the chain, wire, or string's ends and holds it together is known as a clasp. A lobster clasp is a fastening that is held closed by a spring. When pressure is applied to either side of the center bar or turned handle, it opens, forcing the two together, and then springs back to its original shape when the pressure is released. A lobster rectangular clasp comes in a rectangular shape. From our website, you will be able to buy sterling silver lobster rectangular clasps in wholesale.