Material: 304 stainless steel tension springs. Precise size: Wire diameter 0.6 mm (0.024 in), outer diameter 7 mm (0.28 in), length 80 mm (3.15 in). This size combination provides a strong, secure fit for a variety of applications and dependable performance. Design and performance: Strong hooks and a uniform pulling force. Loops at both ends offer firm attachment points, while the spring's elasticity delivers powerful resistance and reliable resilience under tension. Wide application range: Suitable for electronics, tools, toys, construction, and machinery. Also applicable in manufacturing, research, automotive, and aerospace contexts. Their versatility makes them a practical choice for both commercial and projects. Use scenarios: In electronic enclosures or small devices to provide tension or action for lids, covers, or moving components. In mechanical assemblies of tools or machinery where a durable tension element is needed to hold parts in position or provide retraction. In hobby projects or toys requiring robust attachment points and a consistent pulling force for springloaded features.