Torsion springs are often close wound, so that each coil touches the next. Their ends are configured in different ways. Like extension springs, torsion springs must attach to other parts at both ends in order to work. When forces act on the spring ends, they tighten the coils of the torsion spring. As the custom spring returns to its resting coil diameter, it brings the attached parts with it.

Specifications of Clamp Phone Holder

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