Pandahall 5 Strands 18.11 Inches 4mm Black Rubber Necklace Jewelry Making, with Platinum Color Brass Box Clasps Size: necklace: about 460mm long, 135mm inner diameter; cord: about 4mm thick. Material: Rubber; Color: Black Metal Color: Platinum; Priced per 5 Necklaces High-quality, soft rubber cords are appeal to add fashion pendants and beads to make wonderful necklaces. Finished with easy-to-use brass box clasps.