Airhead AHDL-4 4' Bungee Dock Line The Airhead Bungee Dock Lines absorb shock to boats, cleats, docks, pylons, and other hardware. The bungee cord is hidden inside the rope, where it acts as a built-in snubber. Two foam floats on these bungee dock lines protect the boat from chafing, which extends its longevity. There's a sliding adjustment at both ends for quick, efficient docking. These dock lines are recommended for docking boats and PWC's up to 3,500 pounds. The tensile strength of the rope is 2,150 pounds, and it stretches to 5 ½ feet. This boat dock tie comes in a multi-color black, blue, and red color scheme.