Made with UV resistant industrial strength 6/6 Nylon. Two 50 packs, each has 50 18 inch pieces. 180 lbs tensile strength. Working temperature: 40-85 degrees C or 40-185 degrees F. Strong cable ties usable in many applications. This set of industrial strength 6/6 nylon cable ties can help organize your cables and other miscellaneous items that need to be tied together. With a length of 18 inches and tensile strength of 180 lbs, they hold tough in heavy-duty applications without loosening up. The ideal working temperature is between 40-85 degrees Celsius or 40-185 degrees Fahrenheit.