Material Our tension springs are made of 304 stainless steel, providing durability and corrosion resistance for reliable performance in a variety of environments. Precise size Wire diameter: 2 mm (0.079 in) Outer diameter: 12 mm (0.47 in) Length: 40 mm (1.57 in) This exact size combination ensures a strong, secure fit for many applications and consistent performance every time. Strength and elasticity Equipped with strong hooks at the ends and a uniform pulling force, these springs are built to handle tough tasks. The loops at both ends provide firm attachment points, while the spring's elasticity offers resistance and reliable resilience under tension. Wide application range Our tension springs are widely used in electronics, tools, toys, construction, and machinery from manufacturing to research, and from automotive to aerospace. Their versatility makes them suitable for both commercial and projects. Common use scenarios Electronics and consumer devices: secure lids, battery compartments, or small panel latches that require reliable tension. Tools, toys, and small machinery: provide action for handles, hinges, or springloaded components. Automotive and aerospace: tensioning components in trims, latches, and other small assemblies that need durable springs. Note: This description preserves the original specifications and intended uses, presented in clear, customerfriendly language with concise details.