No separate components increase comfort and support the cable over longer spans. Built-in shock absorber. Simply attach to the appropriate anchor point. Lightweight and easy to use. Includes carrying case. The Protecta® Pro-line™ complete temporary lifeline - 20 m. The 3M™ Protecta® Pro-line™ is an easy-to-setup, portable horizontal temporary lifeline. No need for components to be connected or fastened; simply use the latch handle to tighten the lifeline. No separate parts are necessary, just attach to the appropriate anchor point and tighten. Lightweight and easy to use, includes a carrying case. Built-in shock absorber reduces the forces applied to the structure significantly.