Our Nylon Cable Ties are manufactured from 100% Virgin Nylon. The rounded edges reduce insertion and surface abrasion, and the reinforced neck provides superior strength. They are available in Natural or Black color from 4" to 24" inches in length and from 18 to 175 pounds of tensile strength. Nylon is resistant to fuels, lubricants and most chemicals, but is attacked by strong acids and oxidizing agents. It is very important to use the black cable ties when the installation will be exposed to direct sunlight.