Heavy Duty Coloured Cable Ties. Pack of 100. 300mm x 4.8mm. Manufactured from Nylon 66, and UL approved. Suitable for a variety of uses. Other sizes available in our shop. Specification Tested to underwriters laboratory UL94V2 Material Nylon: Nylon 66 Working Temperature Range: -40°C to 85°C UL Flammability Rating: UL94 Oxygen Index: 25% - 28% Water Absorption (24 hrs): 1.3% Smoke Density: Flaming 35, Non Flaming 13.