This spring back bracelet is made from 2 "Royal Lace" forks from 1973, with 2 Swarovski crystals added. It has a spring hinge feature which makes it easy to put on and take off. All of my pieces are handmade by me. I design, cut, drill, shape, sand, antique, and assemble each piece. To prolong the life of the spring; please put on and take off on the side of your wrist to avoid stretching it All of my pieces are handmade by me. I design, cut, drill, shape, sand, antique, and assemble each piece. I only use hypoallergenic surgical stainless steel chain and ear wires.