German hook extension springs are a common type of spring characterized by German hooks at both ends.The German hook is typically triangular or V-shaped, offering a larger contact area and stronger gripping force, which allows for secure connections with other components. With their unique hook design and excellent performance, German hook extension springs are widely used across various industries. Understanding the features and applications of German hook extension springs is essential for effectively selecting and using extension springs. The working principle of an extension spring is to generate a counteracting force when stretched or pulled apart. By utilizing the restoring force (tension) after being extended, these springs can control the movement of mechanical parts, absorb and store energy, and measure force.