Have trouble fastening your jewelry? These clasps attach easily to the existing clasps on your bracelet or necklace. Simply hold the self-aligning magnetic ends near each other to fasten, and pull apart to open. Set of 4 clasps in Silver tone, Gold tone, Rose tone and Black tone have magnetic, crystal-covered circles or hearts. Copper, zinc and magnet. Each approx. 1 1/2"L. Set of 4. Styles available in Heart or Circle.