steel material: Our metal zipper straps are made of high-quality 304 steel. Compared with traditional plastic straps, they have better UV resistance, tensile resistance and wear resistance. This ensures a longer service life, making them suitable for various environments, including humid conditions, direct sunlight and high temperatures. Outstanding performance: Our upgraded metal zippers feature enhanced heat resistance and corrosion resistance, a thicker locking mechanism, and a maximum tensile strength of 198 pounds (approximately 90 kilograms). They can operate within a temperature range of -170°F to +1000°F and are suitable for heavy-duty applications in extreme environments. Easy to use: Using steel cable ties is very simple: Just tighten them with a pair of pointed-nose pliers and cut off the excess parts with a pair of diagonal pliers or tin scissors. This can effectively complete the project. Sizes to meet different needs: We offer several sizes of ties: 4.6x100mm, 4.6x200mm and 4.6x400mm. In addition, the wider steel cable ties are available in sizes of 7.9x100mm, 7.9x200mm and 7.9x400mm. This different size range provides options for safely bundling different objects. Multiple applications: Metal zippers offer an excellent solution for long-term fixation of various objects. They can be used in machinery, vehicles, gardens, farms, cables, pipes, roofs, basements, and are ideal choices for construction work and industrial applications.