• Made of heavy-duty 304 stainless steel, resistant to rust and corrosion. • Double hook design at 90 degrees for easy connection to cords, straps, and eyelets. • Technical dimensions: wire diameter 0.6 mm, outer diameter 6 mm, and static length 45 mm. • Polished surface, smooth and burr-free for a long service life. • Maximum spring force of 0.8 kg (8.1 N) with a maximum pull length of 50.0 mm. • Suitable for applications in tents, trampolines, fitness equipment, automotive, and maintenance. • The package includes 20 extension springs.