Layering your necklaces is so easy with this 18K gold plated connector. This necklace clasp will keep your layered necklaces from getting tangled while wearing. Easy to use: This necklace stacker clasp is a long magnetic tube, you open the tube by pulling it apart, then it closes by sliding it back together. Each half comes with connectors to attach your necklaces on each end. 18K Gold Plated Stainless steel. Hypoallergenic. Necklaces not included.