An indispensable partner for safety ziplines. The 5.4-foot spring brake helps reduce impact force at the end of the rope, suitable for applications such as steel cable slanting and cargo lifting. Offers excellent performance in stretching and rebounding. Rubber head size is 7 x 4 x 4 cm. The zipline spring brake features a 5.4-foot spring, longer than most similar products on the market, providing a longer effective deceleration distance. Improved deceleration performance for smoother operation. Constructed from stainless steel, this zipline spring brake offers high tensile strength, durability, and resistance to rust. Multiple forging processes and strict quality control contribute to an extended service life. Equipped with a special silica gel buffer plug. The star-shaped soft plug is flexible, reducing the risk of damage to other components and resistant to breakage. Uniform spring pitch and clear texture ensure stable resilience. Precision craftsmanship delivers consistent performance. Easy to install without tools. Simply thread the cable through the green star-shaped silicone plugs at both ends. Color: As shown Material: Stainless steel + rubber Size: Total length 165 cm, spring outer diameter 2.5 cm Package Contents: 1 x Spring 2 x Silicone head Note: Light shooting and different displays may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3 cm.