Konmay Necklace Cord 50PCS 20'' Black Satin Silk Necklace Cord 2.0mm With Dull Silver Metal Parts HIGH QUALITY: The satin silk cord we used is silky and smooth feels, flexible and durable to use. The satin cord we use is shiny, strength, acid-proof, wear-resistant, not absorbing the sweat and will not fade. All the metal parts are lead and nickel free QUANTITY  Comes with 50pcs black necklace cord, enough for jewelry making using LENGTH - Each necklace cord size are 20/ 50.0cm length (not include the 2'' of extension chain), you can use the lobster claw clasp to adjust the length Size of the cord is approx. 2.0mm, the size of the coil end is approx. 3.8mm PERFECT FOR HANDMADE NECKLACE  Ready-made necklace so that you can add pendants, charms or other jewelry findings