Kwik Tek AHTRB-3 Bungee Tube Rope Extension Bungee Tube Rope Extension attaches between your boats tow point and the tube tow rope Enjoy brief surges of speed as the bungee stretches and contracts Reduces wear and tear on tubes and riders by absorbing sudden jerks from slack in the line 16 strand, 9/16 inch x 3 foot polypropylene rope stretches to 5 feet 4,150 pound tensile strength is perfect for up to 4 rider tubes