Widely used in sports equipment, industrial automation, it delivers stable axial tension and elastic return via single-hook connections, ensuring smooth operation throughout the extension stroke.

Precision cold-wound from high-quality high-carbon steel wire with uniformly closed coils, this spring incorporates a built-in initial tension for immediate force response, effectively eliminating motion slack. The zinc-plated surface treatment provides excellent moisture and rust resistance, particularly suited for long-term use in outdoor or humid environments. The single round-hook end enables quick attachment and removal, while multiple length variants within the same series allow flexible selection based on actual stroke requirements.