A cable tie, also known as a zip tie or tie-wrap, is a type of fastener, especially for binding several electronic cables or wires together and organizing cables and wires. Tensile Strength - 21.77 kilograms Material - Nylon 66 HEAVY DUTY CABLE TIES - Tronic cable ties are made of industrial grade UL certified polyamide PA66 nylon giving them toughness and high tensile strength. DURABLE & HEAT & UV RESISTANT - Extremely UV and Heat resistant (UL Flammability of 94V.2) ensuring they can be exposed to high temperatures (-20F/176F) for extended periods of time and are suitable for indoor and outdoor use. SELF-LOCKING DESIGN - Lock in place very securely, locking teeth stop the cable tie at the desired length. Easy to use and right to the point. WIDE APPLICATION - The multifunctional cable ties are widely used in home, garden, office, and garage tidying. Not only perfect for cable or wire organized and binding using but also great for gardening, permanent fix, hanging heavy stuff, and so on.