CrazyPiercing 50pcs Black Necklace Cord 2.0mm/18'' with 2'' Extension Chain Lead&nickel Free IMITATION LEATHER CORDS  Waxed cotton material makes it lightweight, flexible and durable to use, and the imitation leather looking is cool to match your pendants. EXCELLENT QUALITY NECKLACE CORDS  All the black cords are well made and hard to break, they are stable for long time use. Ready-made necklace so that you can simply add pendants, charms, beads or other jewelry findings to make your unique necklace. Length in 18'', plus 2'' extension chain, Size of the cord is approx. 2.0mm Package of 50pcs black satin silk necklace cord Dull silver Zinc Alloy clasp(free of Lead and Nickel)