Southwire cable ties are the superior tie to use in your home, office, garage, workshop, or almost any other application. These cable ties are proudly MADE IN THE USA from a UV-resistant industrial strength Nylon 6/6. Perfect for organizing your cables and other miscellaneous items that need to be tied together. 1000-Pack, 4-inch black cable ties with 18lb tensile strength. Working temperature range: -40°C to 85°C or -40°F to 185°F. Rated for indoor and outdoor use. UL listed.