Material: Waxed Cotton Size(approx): cord thickness:1.5mm / 2mm,length: about 45cm+5cm extension chain(about 18"+2") Quantity: 10pcs/20pcs/50pcs,please choose your quantity Color: black Package: opp bag and pretty gift bag Conversion: 1mm = 0.0393 inch or 1 inch = 25.4mm Note:the photo does not show actual size, please refer to Description for size details. Color may very slightly due to the color calibration of each individual monitor.