Material: Black satin silk cord and zinc alloy metal parts Size: 2.0mm,cord length in 18'',with 2'' extension chain to adjust the length Bulk quantity,each pack includes 50pcs This necklace cord is soft and silk feels, the cord is shimmering, strength, acid-proof, wear-resistant, not absorbing the sweat and will not fade, and the dull silver metal parts are lead and nickel free. This durable necklace cord is great for necklaces or bracelet making, just simply add a pendant or charms.PERFECT FOR HANDMADE NECKLACE Or BRACELETS – Ready-made necklace so that you can add pendants, charms or other jewelry findings. Bulk Quantity – Comes with 50pcs black necklace cord, enough for jewelry making using. Color: Black. 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. 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.Date First Available: December 15, 2017. Manufacturer: KONMAY. Department: Unisex-adult. Item Weight: 0.635 ounces. Is Discontinued By Manufacturer: No. Best Sellers Rank: #9,526 in Arts, Crafts & Sewing. Customer Reviews: 4.5 out of 5 stars 325 ratings 4.5 out of 5 stars. : B078B1WC5V. Item model number: NCL1020-18BK-50. Package Dimensions: 9.45 x 3.74 x 2.24 inches.