Lots of plastic with -locking teeth Allow you to securely organize any group of cables or wires Organize tangled mess behind your computer desk or home theater rack with these simple nylon zip cords;Easy to install, Just zip and snip Each cable tie can to 40lbs;Widely used in shop, garage, home, office, etc. Specifications: Length: 190mm Width: 2mm Max Bundle Dia. 80mm (3 6/64") Min Tensile Strength: 18KG (40 Lbs) Working Temperature: -40~+85 Celsius Color: Black Material: Nylon66 conforming to UL94V-2, resistant to acid, corrosion, good insulation Anti-aging, with high tensile strength. Package Contents:100 x Note:Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3 cm.