Material: 304 stainless steel construction for corrosion resistance and durable performance in varying environments. Size: wire diameter 0.9 mm (0.035 in), outer diameter 7 mm (0.28 in), length 90 mm (3.54 in). This exact sizing provides a strong, secure fit for a range of applications and dependable performance. Construction and performance: strong hooks and a uniform pulling force enable reliable operation under load. Loops at both ends provide firm attachment points. The spring's elasticity offers consistent resistance and reliable resilience under tension. Applications: widely used across industries including electronics, tools, toys, construction, and machinery. Also suitable for manufacturing and research, automotive, and aerospace contexts. Use scenarios: Electronics enclosure or cabinet door: provides a reliable returning force to keep panels closed or in position. Small machinery or tool assemblies: serves as a spring for levers or moving components. Toys and hobby projects: enables controlled movement and tension in moving parts.