[Extension Spring] The Zipline spring brake with a 5.4-foot spring is longer than most other similar spring brakes on the market. Has a longer effective deceleration distance. The deceleration performance is better and easier. [Special silica gel buffer plug] The star-shaped soft plug made of silica gel is flexible and not damage other parts or break. and exquisite manufacturing process to that each product has excellent performance. The pitch of each spring is uniform, the texture is clear, and the exquisite craftsmanship ensures stable resilience. [Flexible and ] The zipline spring brake is made of stainless steel, which has better tensile resistance than stainless steel of the same size, is and not rust. After multiple forging processes and quality control, our Zipline spring brake cables have a longer service life. [Specifications] An indispensable partner for safety ziplines. The 5.4-foot spring brake is suitable for reducing the impact force at of the rope, such as steel cable slanting and cargo lifting. Excellent performance in stretching and rebounding. The size of the rubber is 7 x 4 x 4cm. [Easy to install] No tools are required, just pass the cable through the green star-shaped silicone plugs at both ends., Weight: 0.64264749373 pounds, Manufacturer: Giuneuow