You can use it to make necklaces, bracelets and other jewelry for your or family as handmade gifts, such as birthdays, anniversaries, etc. Adjustable Size: Each necklace cord is 1.5mm in diameter, 45cm in length with a lobster claw clasp and 5cm extension chain, you can adjust the length to fit your needs. Quantity: Total 20pcs black waxed necklace cords, enough for making necklace, bracelets and other jewelry projects. The black cords are hard to break, surface, lightweight, rope ends with metal alloy wrap, strong and durable. Application: Jewelry making, such as DIY necklace, bracelet, anklet, you can also add pendants, crystals, beads, etc. make your DIY crafts.