Gardner Bender's Patented Double Lock Cable ties are designed for strength, durability and reliability. Ideal for all bundling purposes wires, cables, hoses or ducts, you name it and these ties will bundle it. Made from durable 100% nylon 6/6 material. The bent tip ensures easy insertion into the tie head while close serrations on both sides of the tie promote precise adjustment. The smooth radiuses edges ensure easy slip as you tighten while finger grips on the end ensure a secure and comfortable grip when hand-tightening. Investigated using particular requirements that allowed it to be a UL recognized component.