Who gets frustrated trying to add a clasp to jewelry when there is no one around to help? These magnetic beads are so amazing! The two sides connect back together perfectly every single time and they look like a beautiful silver bead when they are closed. I use these with medium weight necklaces and they've worked great. Everyone loves how easy it is to put on and take off necklaces that are made with them. However, some people working in hospitals can't use anything with magnets, so be aware of your customer's needs. :-)