KONMAY 50pcs Rainbow Satin Silk Necklace Cord 2.0mm/18'' with 2'' Extension Chain Lead&Nickel Free High Quality: this necklace cord is made with shimmering, strength, acid-proof, wear-resistant, not absorbing the sweat and will not fade satin silk cord, soft, smooth and silky feels. The dull silver metal parts are all lead and nickel free Size: 2.0mm, the cord length in 18'', with 2'' of extension chain to adjust the length.The size of the coil ends is 0.38mm, fits the beads which the hole size is over 4.0mm Color: Rainbow Bulk Quantity  Comes with 50pcs black necklace cord, enough for jewelry making using PERFECT FOR HANDMADE NECKLACE Or BRACELETS  Ready-made necklace so that you can add pendants, charms or other jewelry findings