This 3mm rubber Caspia™ necklace comes in black, providing you with a simple backdrop for embellishments or pendants. At 20 inches in length, this necklace is one of the longer finished necklaces that we sell. The sterling silver trigger clasp is really what makes this necklace shine. One end of the clasp unscrews, allowing you to slide beads over the stringing material. With this handy feature, you can use beads with bead holes that closely match the 3mm width of the actual stringing material. Try stringing this necklace with large hole Caspia™ beads for a high quality design that can be finished in minutes. Note: If the end is screwed too tightly it can break off. The neoprene rubber material is latex-free, so it's safe for anyone to wear!