Premium Commercial Grade Nylon Cable Ties 500 ties - 7.2 mm wide by 350 mm long - Black. These premium, commercial grade nylon cable ties have been lab tested for function and quality and can handle harsh weather conditions. Made from rust-resistant and corrosion-resistant, marine grade nylon plastic, these ties are strong and difficult to break. Heavy Duty marine grade nylon plastic can't be easily broken. Lab-tested for function and durability - can handle wet and salty conditions. Rust and corrosion resistant. Weather resistant: built to handle big weather temperature variations. One Year Guarantee against workmanship and defects.