Rated at 350 lbs. of tensile strength, Infinity Ties are made of Nylon 6/6 material for indoor and outdoor applications. They come in standard lengths of 15", 33" and 50", but any length is available upon request. The ties are 1/2" wide and 0.036" thick. The tie's strength comes from a stainless-steel locking device recessed in the heat to protect wiring.